Data visualization is a process of converting data into a graphical format that can be understood by everyone. Visualization of data can be done by using various formats such as charts, maps, and graphs. It is quite challenging to understand the hidden insights or trends in data when it is in text format.

There are many data visualization tools available in the market, and they enable us to see trends, outliers, and patterns in data. Data visualization tools help the big data in leveraging the full potentiality.

What are the user roles available in Tableau server?

We have various types of user roles available in Tableau server. Each level differs in terms of accessibility to sensitive data. Below mentioned are the different types of user roles

Server Administrator
Site Administrator
Publisher
Interactor
Viewer
Unlicensed

Explain what the file extensions in the tableau are.

We have various types of file extensions in tableau which are

Tableau data extract (.tde)
Tableau packaged datasource (.tdsx)
Tableau bookmark (.tdm)
Tableau data source (.tds)
Tableau map source (.tms)
Tableau packaged workbook (.twbx)
Tableau Workbook (.twb)
Tableau preferences (.tps)

What is the difference between TWB and TWX?

TWB. it is an XML document which is made ready to you for the Tableau workbook. Which contains no data.

TWX. it is a Zipped’ one which contains the data like background images, file extracts, etc.

What are the Platforms that tableau can run on?

Tableau can run on Mac and Windows.

What is the Tableau data engine?

The data engine is an analytical database designed to receive instant query response, integrate into existing data infrastructure, achieve predictive performance. Tableau data engine does not really follow in-memory technology. If you are handling a large amount of data, it may take time to import, create indexes and perform actions. Here, RAM is hardly utilized.

What is the difference between embedded data sources and published data sources in Tableau?

The basic difference between the embedded data source and the published data source is as follow –

Published data source contains connection information that can be used by multiple workbooks and is independent of any workbook.
Embedded data source contains connection information related to a workbook.

What are the different types of user authentications in the Tableau server?

There are two types of user authentications in Tableau server –

Local authentication
Active directory

Is it possible to change the user authentication in a single installation?

No, it is not possible.

What are the ways to manage cache in a Tableau server?

In a Tableau server, the cache is handled in three ways –

Refresh less often
Balanced
refresh more often

What is SSL and how to configure SSL?

SSL stands for Secured Socket Layer that secures information. During data transfer, it encrypts the data, and once data reaches the destination, it will automatically decrypt it. To configure SSL, we need to obtain an SSL certificate file from the third hosting company.

Can the Viewer user perform filtering or not?

No, Viewers cannot perform filtering.

Can interactor publish the visualization or not?

No, interactor site role users cannot publish the visualization.

What is a page shelf?

Page shelf is a powerful tool used to control the output display. It fragments the view into a series of pages, each having a different view. A user can also flip through pages using specific control to analyze view and analyze data.

What is Tableau server?

Tableau server is used for publishing the dashboard, stories and worksheet that are created by Tableau desktop. After uploading the workbook on the server, you need not have a Tableau server installed in your system. You can simply work with the login credentials.

What is a hierarchical field?

A hierarchical field drills down data and is used to view data in a more granular level and analyze the data better.

How is performance testing done in Tableau?

Performance testing can be done with TabJolt, which is a load generator to perform QA. TabJolt is not directly supported by Tableau; users need to install it from other open sources.

What are the different Tableau files?

Different Tableau files include.

It contains a single worksheet and allows you to share your work quickly
It can hold single or multiple worksheets and dashboards
Data Extraction Files. These files can be a local copy of a subset or the entire data source
Data Connection Files. It is a small XML file containing connection information
Packaged Workbooks. It contains a workbook, background images and supporting local file data.

What are the limitations of context filters?

Tableau takes time to place a filter in context. When a filter is set as context one, the software creates a temporary table for that particular context filter. This table will reload each time and consists of all values that are not filtered by either Context or Custom SQL filter.

What is data blending? When do you use this?

According to Tableau, Data blending is the ability to bring data from multiple data sources into one Tableau view, without the need for any special coding.

You can use data blending in Tableau in the following cases.

Filter on secondary dimension fields
Use secondary dimensions in the view
Link data between two data sources using fields that are not in the view

Name the file extensions in Tableau?

There are a number of file types and extensions in Tableau.

Tableau Workbook (.twb)
Tableau Packaged Workbook (.twbx)
Tableau Data Source (.tds)
Tableau Packaged Datasource (.tdsx)
Tableau Data extract (.tde)
Tableau Bookmark (.tdm)
Tableau Map Source (.tms)
Tableau Preferences (.tps)

Name the components of a Dashboard?

Horizontal layout containers allow the designer to group worksheets and dashboard components left to right across your page and edit the height of all elements at once.
Vertical containers allow the user to group worksheets and dashboard components top to bottom down your page and edit the width of all elements at once.
Text
Image Extract.A Tableau workbook is in XML format. In order to extracts images, Tableau applies some codes to extract an image that can be stored in XML.
Web [URL ACTION].A URL action is a hyperlink that points to a Web page, file, or another web-based resource outside of Tableau. You can use URL actions to link to more information about your data that may be hosted outside of your data source. To make the link relevant to your data, you can substitute field values of a selection into the URL as parameters.

How to view underlying SQL Queries in Tableau?

Viewing underlying SQL Queries in Tableau provides two options.

- Create a Performance Recording to record performance information about the main events you interact with workbook. Users can view the performance metrics in a workbook created by Tableau.
  - Help> Settings and Performance> Start Performance Recording
- Reviewing the Tableau Desktop Logs located at C. UsersMy DocumentsMy Tableau Repository. For a live connection to the data source, you can check log.txt and tabprotosrv.txt files. For an extract, check the tdeserver.txt file.

What are the differences between groups and sets?

Groups simplify large numbers of dimension members by combining them into higher-level categories. Sets create a custom field based on existing dimensions that can be used to encode the view with multiple dimension members across varying dimension levels.

Define parameters in Tableau and their working?

Tableau parameters are dynamic variables/values that replace the constant values in data calculations and filters. For instance, you can create a calculated field value returning true when the score is greater than and otherwise false. Using parameters, one can replace the constant value of and control it dynamically in the formula.

How do we do testing in Tableau?

You can do performance testing on Tableau with Tableau Server load-testing solution called TabJolt. You can use Tab Jolt to push a heavy workload onto Tableau Server to give it a jolt and study how the server bends or breaks under load.

What is default Data Blending Join?

Data blending is the ability to bring data from multiple data sources into one Tableau view, without the need for any special coding. A default blend is equivalent to a left outer join. However, by switching which data source is primary, or by filtering nulls, it is possible to emulate left, right and inner joins.

What do you understand by the blended axis?

In Tableau, measures can share a single axis so that all the marks are shown in a single pane. Instead of adding rows and columns to the view, when you blend measures there is a single row or column, and all of the values for each measure are shown along one continuous axis. We can blend multiple measures by simply dragging one measure or axis and dropping it onto an existing axis.

What is the story in Tableau?

A story is a sheet that contains a sequence of worksheets or dashboards that work together to convey information. You can create stories to show how facts are connected, provide context, demonstrate how decisions relate to outcomes, or simply make a compelling case. Each individual sheet in a story is called a story point.

What are the platforms Tableau server can run on?

The tableau server can run on Windows and Mac.

Does Tableau integrate with Hadoop/Hive Server?

Tableau can only integrate with HiveServer, not Hadoop.

How do you normalize data for use in Tableau?

When an Excel data source (other than a cube) is already formatted as a cross-tabulation or is otherwise aggregated, options for viewing, aggregating, and grouping in Tableau are limited. Tableau cannot see underlying data points that have already been summarized into a higher-level group or order. To take advantage of Tableau’s full functionality, you need to normalize the data before connecting to it from Tableau.

Explain and implement serialization of a binary tree?

You can write serialization for leaf nodes, and then for parent nodes.

Recursive map. {value. [serialize(left), serialize(right)]}, where serialized leaf is null.

What are the differences between Tableau’s Desktop/Online versions?

Tableau Desktop is used to visualize and analyze data, create workbooks, visualizations, dashboards, and stories.
Tableau Desktop Professional (but not Desktop Personal) can then publish these to Tableau Server, Tableau Online, and Tableau Public.
Tableau Server and Tableau Online allow you to safely distribute the interactive workbooks to the right people. You can edit workbooks, visualizations, dashboards, and stories in Server or Online, but you can’t produce new ones. The editing options are limited compared to the Desktop.
Server and Online can be used as high-performance data repositories for Desktop users.
Tableau Public is a free tool that is intended for people who want to publish information, accessible to anyone. There are both a Desktop and Online components.

What is the major functionality difference between Tableau Desktop and Tableau Server?

Tableau Desktop and Server we need to understand their key functionality.

Tableau Desktop and Tableau Server
Tableau Desktop	This is where reports/dashboards are being created connecting to the respective data sources
Tableau Server	This is where the reports/dashboards are being published for others to view

What is the difference between .twb and .twbx extension?

.twb is an XML document that contains all the selections and layout made you have made in your Tableau workbook. It does not contain any data. .twbx is a ‘zipped’ archive containing a .twb and any external files such as extracts and background images.

What’s twin axis?

To show live in one graph

What’s emulsified axis?

Multiple measures are shown on a single axis and additionally, all the marks are shown in a single pane.

Drag a dimension in an exceeding column
Drag the primary live in column
Now drag second live in existing axis
Us/multiplemeasures_blendedaxes.html

What makes Tableau code stand out?

In my view, Tableau stands out for many reasons.
First, most of the bismuth tools out there are dear. However, Tableau encompasses a free providing (Tableau Public) moreover as an awfully common (also free) educational distribution. Tableau is well recognized by corporations like Forrester analysis to be one in all the foremost simple to use, and agile merchandise presently obtainable. See here. Tableau Ranks # within the Forrester Wave. Advanced knowledge image (ADV) Platforms that create it simple to choose up and take a look at new things with, that knowledge image folks love regarding it.

On the opposite hand, not like a number of the opposite bismuth tools, Tableau isn’t an entire technology stack, it’s most helpful for image and analytics. – You may want alternative merchandise additionally to tableau for heavier enterprise knowledge ETL, maintenance, and storage, etc.

However can we do testing in Tableau?

You can’t take a look at in Tableau as way as I do know. It’s an information image code.

Are you able to get values from totally different sources as one input into a parameter?

Tableau presently not support the ambiguous parameters. “Case Study. The “dynamic parameter with a blend” technique is wont to highlight one price, however not multiple values attributable to the method it works. As Tableau parameters aren’t dynamic, we tend to cannot “filter” the list of values at runtime.”

Is Tableau code smart for a strategic acquisition?

Yes for sure! It provides you knowledge insight to the extent that others don’t.
Helps u arrange and purpose the anomalies and improvise your method for betterment.

The way to show high five and last five sales in the same view?

Using filters or calculated fields we are {able to} able to show the highest five and last five sales in the same view?

The way to add custom Color to Tableau?

Create Custom code in “Preferences.tps”
Navigation … Documents » My Table Repository »Preferences.tps
Add custom code
Note. In tableau nine. version we’ve color picker choice.

However will we tend to mix info and file knowledge in Tableau desktop?

Connect knowledge double, one for info tables and one for a file. The Data->Edit Relationships
Give a be part of condition on a common column from sound unit tables to file

What will TABLEAU do?

Our goal is to assist folks to see and perceive knowledge. Our code merchandise place the ability of information into the hands of everyday folks, permitting a broad population of business users to interact with their knowledge, raise queries, solve issues and build price.

What’s Tableau Public?

Public could be a free service that lets anyone publish interactive knowledge to the net. Once on the net, anyone will move with the information, transfer it, or produce their own visualizations of it. No programming skills are needed. take care to seem at the gallery to check a number of the items folks are doing with it.

What’s knowledge modeling?

Data modeling is that the analysis {of knowledge|of knowledge|of information} objects that are employed in a business or alternative context and also the identification of the relationships among these data objects. Knowledge modeling could be a beginning in doing object-oriented programming

What’s page shelf?

Page shelf is powerfull a part of the tableau that you simply will use to control the show of output moreover as written results of output.

What are the foremost variations between tableau version seven. and tableau version eight?

New visualizations are introduced like treemap, bubble chart and box and whisker plot
We are able to copy worksheet directly from one book to a different book
Introduced R script

The way to produce crammed maps?

Step . Build a Map read Double-click geographic fields like State, Area Code, Zip Code, etc.
Step . Choose the woman Map Mark to sort the automated mark sort can show this kind of reckon circles over a map. On the Marks card, choose crammed Map to paint the geographic areas.
Step . Drag a Field to the color Shelf outline, however, the locations are colored by dragging another field to the color shelf.

Is Parameter have its dropdown list?

Yes, it should have its own sink list, the entries that you create within the Parameter whereas making it is viewed as a Dropdown list.

What is data visualization?

Data visualization refers to the techniques used to organize and present information intuitively (e.g. points, lines, or bars). According to Tableau, using Tableau visualizations, you gain the ability to quickly s; your data becomes a competitive advantage instead of an underutilized asset.

. Name the file extensions in Tableau.
There are many file types and extensions in Tableau, some of them are.

Tableau Workbook (.twb)
Tableau Packaged Workbook (.twbx)
Tableau Data Source (.tds)
Tableau Packaged Datasource (.tdsx)
Tableau Data extract (.tde)
Tableau Bookmark (.tdm)
Tableau Map Source (.tms)
Tableau Preferences (.tps)

How do we test in Tableau?

You can do performance testing on Tableau with Tableau Server load-testing solution called “Tab Jolt”. You can use Tab Jolt to push a heavy workload onto Tableau Server to give it a jolt and study how the server bends or breaks under load.

What is default Data Blending Join?

. Data blending Join is the ability to bring data from multiple data sources into one Tableau view, without the need for any special coding. A default blend is equivalent to a left outer join. However, by switching which data source is primary, or by filtering nulls, it is possible to emulate left, right and inner joins.

How do you add custom colors to Tableau?

Tableau offers three types of color palettes. categorical, sequential, and diverging. You can create your custom color palette by modifying the Preferences.tps file that comes with Tableau Desktop. The Preferences.tps file is located in the My Tableau Repository. The preferences file is a basic XML file that you can open in a text editor to modify. In tableau . version there is a color picker option.

How do you automate reports using Tableau software?

.This is how you can automate the reports. while publishing the report to the Tableau server, you will find the option to schedule reports. Click on this to select the time when you want to refresh the data.

What is the difference between Traditional BI Tools and Tableau?

Traditional BI Tools vs Tableau
Traditional BI Tools	Tableau
. Architecture has hardware limitations.	. Do not have dependencies.
. Based on a complex set of technologies.	. Based on Associative Search which makes it dynamic and fast
. Do not support in-memory, multi-thread, multi-core computing.	. Supports in memory when used with advanced technologies.
. Has a predefined view of data.	. Uses predictive analysis for various business operations.

What are Measures and Dimensions?

Measures are the numeric metrics or measurable quantities of the data, which can be analyzed by dimension table. Measures are stored in a table that contain foreign keys referring uniquely to the associated dimension tables. The table supports data storage at atomic level and thus, allows more number of records to be inserted at one time. For instance, a Sales table can have product key, customer key, promotion key, items sold, referring to a specific event.
Dimensions are the descriptive attribute values for multiple dimensions of each attribute, defining multiple characteristics. A dimension table, having reference of a product key form the table, can consist of product name, product type, size, color, description, etc.

What is Tableau Data Engine?

. Tableau Data Engine is a really cool feature in Tableau. It’s an analytical database designed to achieve instant query response, predictive performance, integrate seamlessly into existing data infrastructure and is not limited to load entire data sets into memory.
If you work with a large amount of data, it does take some time to import, create indexes and sort data but after that everything speeds up. Tableau Data Engine is not really in-memory technology. The data is stored in disk after it is imported and the RAM is hardly utilized.

What is Tableau Data Server?

Tableau server acts a middleman between Tableau users and the data. Tableau Data Server allows you to upload and share data extracts, preserve database connections, as well as reuse calculations and field metadata. This means any changes you make to the data-set, calculated fields, parameters, aliases, or definitions, can be saved and shared with others, allowing for a secure, centrally managed and standardized dataset. Additionally, you can leverage your server’s resources to run queries on extracts without having to first transfer them to your local machine.

What is the difference between joining and blending in Tableau?

Joining term is used when you are combining data from the same source, for example, worksheet in an Excel file or tables in the Oracle database
While blending requires two completely defined data sources in your report.

How to do Performance Testing in Tableau?

Performance testing is again an important part of implementing tableau. This can be done by loading Testing Tableau Server with TabJolt, which is a “Point and Run” load generator created to perform QA. While TabJolt is not supported by tableau directly, it has to be installed using other open-source products.

How to add Custom Color to Tableau?

Adding a Custom Color refers to a power tool in Tableau. Restart you Tableau desktop once you save .tps file. From the Measures pane, drag the one you want to add color to Color. From the color legend menu arrow, select Edit Colors. When a dialog box opens, select the palette drop-down list and customize as per requirement.

How to automate reports?

You need to publish report to tableau server while publishing you will find one option to schedule reports. You just need to select the time when you want to refresh data.

Mention what are different Tableau files?

Different Tableau files include.

Workbooks. Workbooks hold one or more worksheets and dashboards
Bookmarks. It contains a single worksheet and its an easy way to quickly share your work
Packaged Workbooks. It contains a workbook along with any supporting local file data and background images
Data Extraction Files. Extract files are a local copy of a subset or entire data source
Data Connection Files. It’s a small XML file with various connection information

Is Tableau software good for strategic acquisition?

Yes! For sure. It gives you data insight to the extent that other tools can’t. Moreover, it also helps you to plan and point the anomalies and improvise your process for betterment of your company.

What do you understand by blended axis?

In Tableau, measures can share a single axis so that all the marks are shown in a single pane. Instead of adding rows and columns to the view, when you blend measures there is a single row or column and all of the values for each measure is shown along one continuous axis. We can blend multiple measures by simply dragging one measure or axis and dropping it onto an existing axis.

For what Tableau Service is used for?

Tableau server is used for achieving self-service capabilities for your organization. It is mainly helpful for protecting access for the published content. This enables the managers to set up groups and user permissions in projects

Explain about various filters in tableau server?

Filters help in restricting the data from the database. In the tableau server, we have three types of filters which are

Normal filter. it is used to restrict the data from the database based on the dimensions that have been laid. This filter can be created by simply dragging a filter on to the filter shelf.

Quick filter. the name itself states that it is used to filter the reports dynamically. Using Quick filter one can filter the data on the Dashboards in real-time. You are required to define the range to filter the values during run-time.

Context filter. It is used to filter the data that resides in individual worksheets. Whenever a sheet queries a data, it creates a flat temporary table that contains all the values. This temporary table then used to filter the data.

Explain the limitations of Context filters?

There are few limitations associated with Context filters in tableau server, which are

Tableau takes time to place a filter in context
It creates a very long for executing and building empty tables.
It contains a lot of data that has not yet filtered by SQL or the context filter and takes a lot of time to filter data.

What is meant by data blending?

The data blending is a process of bringing the data into one tableau view from multiple sources without writing any special codes. Below mentioned are the areas where Data blending is used.

To filter the data in the secondary dimension field.
To view the data in a secondary dimension view.

Do parameters contain a drop-down list?

Yes, the parameters do have the drop-down list.

How to view underlying SQL Queries in Tableau?

There are two ways for it –

Option – By using the performance recording feature

Create a performance recording for Tableau Server and Tableau Desktop to interpret performance recording workbook for Tableau Desktop

Option –

In Tableau Desktop.

Go to the Logs folder in My Tableau Repository folder.
My Tableau Repository is present in My Documents folder on Windows or the Documents folder on a Mac by default.
In case of live connection data source, you can check the tabprotosrv.txt and log.txt files.
Also, you can check the hyperd.log or tdeserver.txt file.

In Tableau Server.

Generate a snapshot of Server logs.
Unzip the archive logs.zip file.
Go to the vizqlserver folder.
Find lines containing begin-query in the .txt files.

What is the primary functionality difference between Tableau Server and Tableau desktop?

Tableau Desktop – This is the place where dashboards and reports are created connecting it to the data sources
Tableau Server – This is a platform where reports and dashboards are published for other members to see

What are the schedules and data extracts in Tableau server?

Data extracts are the first copies of the actual data fetched from the original data source. Tableau engine uses these data extracts rather than live DB connections to speed up the performance because extracted data is already imported, unlike live DB.

What do you mean by aggregation and disaggregation?

Aggregation and disaggregation are used to develop a scatterplot to compare and measure data values. Aggregation is the calculated form of a group of values that return a single numeric value. It is also possible to set a default aggregation for the values. Disaggregation of data refers to viewing each data source row and analyzing it dependently and independently.

What is the serialization of a binary tree?

Serialization is a process where an object or data structure is converted into a sequence of bits in order to store them in a file or memory buffer. It can also be transmitted across a network link in the same or another computer environment.

Recursive map. {value. [serialize(left), serialize(right)]}, where serialized leaf is null.

List out the different server processes available in Tableau server?

Following are the different server processes available in Tableau –

VIZQL Server
Application Server
Background Server
Data Server
Data Engine
Repository
File Store
Cache
Search and Browse
Gateway

What is the minimum RAM required to install TABLEAU Server?

GB (PRODUCTION)
GB (NON-PRODUCTION)

What is an Alert and how they are configured?

A process of knowing the Tableau server-status automatically through an email whenever server gets down is called an alert. To configure it, we require an SMTP server.

Name the different site roles available in TABLEAU Server

The different Site roles that are available in Tableau Server are as follows –

Interactor
Viewer
Un Licensed
Un Licensed (Can Publish)
Viewer (Can Publish)
Publisher (Interactor+ Can Publish)
Server Admin
Site Admin

What is the difference between groups and sets?

Grouping is a collection of multiple members in a single dimension whereas set refers to a collection of members from multidimensional into a dynamic or constant group.

What do you mean by continuous and discrete in Tableau?

Two of the data roles in Tableau are – discrete and continuous dimension.

Is Tableau software good for a strategic acquisition?

Yes, Tableau is good for strategic acquisition. It is used to get data insight to a great extent that other tools can’t. Also, it allows you to plan and point out the anomalies and improvise processes for the betterment of the organization.

What do you understand about the blended axis?

Blended axis is helpful in comparing two measured values against the same axis. There is no need to add columns and rows to the view because when you blend measures, values for each measure is shown along one continuous axis. Multiple measures can be blended by dragging one measure and then dropping it onto an existing axis.

What is data visualization?

What is the difference between Quick Filter, Normal filter, and Context filter?

In Tableau, filters are used to restrict the data from the database. The differences between Quick and Normal/ Traditional filter are.

A normal Filteris used to restricting the data from the database based on selected dimensions or measures. A Traditional Filter can be created by simply dragging a field onto the ‘Filters’ shelf.
A quick filteris used to view the filtering options and filter each worksheet on a dashboard while changing the values dynamically (within the range defined) during the run time.
Context Filteris used to filtering the data that is transferred to each individual worksheet. When a worksheet queries the data source, it creates a temporary, flat table that is used to compute the chart. This temporary table includes all values that are not filtered out by either the Custom SQL or the Context Filter.

What are the differences between twb and twbx?

A twb is an XML document that contains all the selections and layout made you have made in your Tableau workbook. It does not contain any data.

A twbx is a ‘zipped’ archive containing a twb and any external files such as extracts and background images.

What are Extracts and Schedules in Tableau server?

After this extraction of data, users can publish the workbook, which also publishes the extracts in Tableau Server. However, the workbook and extracts won’t refresh unless users apply a scheduled refresh on the extract. Scheduled Refreshes are the scheduling tasks set for data extract refresh so that they get refreshed automatically while publishing a workbook with data extract. This also removes the burden of republishing the workbook every time the concerned data gets updated.

What is the Page shelf?

Tableau provides a distinct and powerful tool to control the output display known as the Page shelf. As the name suggests, the page shelf fragments the view into a series of pages, presenting a different view on each page, making it more user-friendly and minimizing scrolling to analyze and view data and information. You can flip through the pages using the specified controls and compare them at a common axle.

How to use a group in the calculated field? By adding the same calculation to the ‘Group By’ clause in the SQL query or creating a Calculated Field in the Data Window and using that field whenever you want to group the fields.

Using groups in a calculation. You cannot reference ad-hoc groups in a calculation

Blend data using groups created in the secondary data source. Only calculated groups can be used in data blending if the group was created in the secondary data source.

Use a group in another workbook. You can easily replicate a group in another workbook by copy and pasting a calculation.

What are Quick Filters in Tableau?

Global quick filters are a way to filter each worksheet on a dashboard until each of them contains a dimension. They are very useful for worksheets using the same data source, which sometimes proves to a disadvantage and generates slow results. Thus, the parameters are more useful.

How do you add custom color to Tableau?

Tableau offers three types of color palettes. categorical, sequential, and diverging. You can create your own custom color palette by modifying the Preferences.tps file that comes with Tableau Desktop. The Preferences.tps file is located in the My Tableau Repository. The preferences file is a basic XML file that you can open in a text editor to modify. In tableau . version there is a color picker option.

What is Assume referential integrity?

Referential integrity is a concept that ensures that relationships between databases/tables remain consistent, i.e. it ensures that the references to data are valid. You can improve query performance by selecting this option from the Data menu. When you use this option, Tableau will include the joined table in the query only if it is specifically referenced by fields in the view.

What is the difference between discrete and continuous in Tableau?

There are two types of data roles in Tableau – discrete and continuous dimension.

Discrete data roles are values that are counted as distinct and separate and can only take individual values within a range. Examples. number of threads in a sheet, customer name or row ID or State. Discrete values are shown as blue pills on the shelves and blue icons in the data window.

Continuous data roles are used to measure continuous data and can take on any value within a finite or infinite interval. Examples. unit price, time and profit or order quantity. Continuous variables behave in a similar way in that they can take on any value. Continuous values are shown as green pills.

How do you automate reports using Tableau software?

This is how you can automate the reports. while publishing the report to the Tableau server, you will find the option to schedule reports. Click on this to select the time when you want to refresh the data.

How can we combine database and flat file data in Tableau desktop?

You can combine them by connecting data two times, one for database tables and one for the flat file. The Data->Edit Relationships. Give a join condition on a common column from DB tables to flat file.

What is aggregation and disaggregation of data in Tableau?

Aggregation and disaggregation in Tableau are the ways to develop a scatterplot to compare and measure data values. As the name suggests, aggregation is the calculated form of a set of values that return a single numeric value. For instance, a measure with values ,,, returns . You can also set a default aggregation for any measure, which is not user-defined. Tableau supports various default aggregations for a measure like Sum, Average, Median, Count, and others.

Disaggregating data refers to viewing each data source row while analyzing data both independently and dependently.

Can parameters have a drop-down list?

Yes, parameters do have their independent dropdown lists enabling users to view the data entries available in the parameter during its creation.

What is the Tableau Data Engine?

Tableau Data Engine is a really cool feature in Tableau. It’s an analytical database designed to achieve instant query response, predictive performance, integrate seamlessly into existing data infrastructure and is not limited to load entire data sets into memory. If you work with a large amount of data, it does takes some time to import, create indexes, and sort data but after that everything speeds up. Tableau Data Engine is not really in-memory technology. The data is stored in disk after it is imported and the RAM is hardly utilized.

Will we tend to place associate stand out to go into a shared location and use it to develop a report and refresh it in regular intervals?

Yes, you’ll do it… except for the higher performance use extract.

What’s the distinction between heat map and treemap?

A heat map could be a good way to match classes victimization color and size. In this, you’ll compare totally different measures. Treemap could be a terribly powerful image, significantly for illustrating hierarchal (tree-structured) knowledge and a half – to – whole relationships.

What’s various between twb and twbx file extensions.

Twb could be an alive affiliation, it points to {the knowledge|the info|the information} supply; the user receiving twb wants permission to aforesaid knowledge source and no data is enclosed. .twbx takes knowledge offline, stores the information as a package or nada like a file, thereby eradicating the necessity for permissions from the user, it’s currently a photograph in time of the information as of the time it absolutely was saved as .twbx

What number ways in which we tend to use parameters in Tableau?

We can use parameters with filters, calculated fields, actions, measure-swap, ever-changing views and automotive vehicle updates.

What’s the utilization of latest Custom SQL in tableau?

Custom SQL was written when connecting to knowledge for propulsion the information in an exceedingly structured read, one straightforward example is you have got fifty columns in an exceeding table. However, we want simply ten columns solely. Thus rather than taking fifty columns you’ll write SQL . Performance can increase.

What are the variations between Tableau code and ancient bismuth tools?

Tableau provides simple to use, best in school, Visual Analytic capabilities, however, it doesn’t facilitate the plumbing (data foundation). You could, for instance, marry SQL Server with Tableau to induce the entire package. Tableau licenses are comparatively dear if you’re wanting to scale.
Traditional bismuth will handle it nearly with vital direct prices. Higher consulting, hardware and code prices. Among the mega-vendors, solely Microsoft will give an affordable price proposition. Open supply vendors like Pentaho associated JasperSoft don’t have an extensive enough talent pool, yet.

What are the similarities and variations between Tableau code and Palantir?

Palantir and Tableau are terribly totally different. Palantir has its roots in massive knowledge computing issues involving security, payments, fraud detection and also the likes. Customers/Investors embody Paypal, CIA et al.
Tableau could be an image player – with roots in Stanford U analysis. It’s Visual search language (VizQL) permits users to create visualizations on high of ordinary knowledge warehouses or spreadsheets.

The way to produce cascading filters while not context filter?

I have filter and filter. Based on the filter I would like to filter knowledge
Ex. Filter as Country and Filter . States
I have chosen the country as Bharat and filter ought to show solely Bharat states
Choose choices of Filter states .
select choice of “Only relevant values “

Style a read to point out region-wise profit and sales. I failed to wish line and bar chat ought to be used for profit and sales. However, you may style and please explain?

Generate the Map victimization cities –>then Drag the Profit and sales to the Details–>Add the state as fast filter

What’s knowledge visualization?

Data Image refers to the techniques to communicate knowledge or information by encrypting it as visual objects like points, lines or bars that are contained in graphics.

Style a read in an exceedingly map specified if a user selects any state the cities thereunder state should show profit and sales.

If you would like to point out the Sales and profit in every and each town below the states within the same worksheet. consistent with your you ought to have State, City, Sales, and Profit filed in your dataset.

Double click on the State filed.
Drag the town and drop into Marks card (under the State field)
Drag the sales and drop into size.
Now drag the profit and drop into color.
Click on Size legend and increase the scale.(%)
Right-click on the State field and choose show fast filter.
Choose any state and check whether or not you bought the desired read or not. During this read, size indicates the number of sales and color indicates the Profit values.

What’s your daily work method in Tableau?

I think we tend to all work on totally different comes victimization Tableau, that the work begins from understanding the necessity obtaining the desired knowledge, storyboarding then making visualizations in the tableau and so presenting it to the shopper for review.

What’s parameter in Tableau? and the way it works.?

Parameters are dynamic values that may replace constant values in calculations and might function filters.

However will Tableau perform with vast datasets?

Tableau Performance is predicated on knowledge supply performance. If knowledge supply takes longer to execute a then Tableau should wait up thereto time.

However can you publish and schedule book in tableau server?

First, produce a schedule for specific time and so produce extract for the information supply and publish the book for the server. Before you publish, there’s a choice referred to as programming and Authentication, click thereon and choose the schedule from the sink that is made and publish. additionally, publish knowledge supply and assign the schedule. This schedule can mechanically last the assigned time and also the book is rested.

Outline the names for parameters, filters etc…

Parameters are dynamic values that may replace constant values in calculations and might function filters. Filters are wont to limit the information supported the condition u have mentioned within the filters shelf.

The way to read sql that is generated by Tableau Desktop?

The Tableau Desktop Log files are set in C. UsersMy DocumentsMy Tableau Repository. If you have got a live affiliation to the information supply, check the log.txt and tabprotosrv.txt files. If you’re victimization associate extract, check the tdeserver.txt file. The tabprotosrv.txt file usually shows careful info regarding queries.

What is the difference between Quick Filter, Normal filter, and Context filter?

In Tableau, filters are used to restrict the data from the database. The differences between Quick Filter, Normal Filter, and Context Filter are.

A normal Filter is used to restrict the data from a database based on the selected dimension or measure. A Traditional Filter can be created by simply dragging a field onto the ‘Filters’ shelf.
A quick filter is used to view the filtering options and filter each worksheet on a dashboard while changing the values dynamically (within the range defined) during the run time.
Context Filter is used to filtering the data that is transferred to each worksheet. When a worksheet queries the data source, it creates a temporary, flat table that is used to compute the chart. This temporary table includes all values that are not filtered out by either the Custom SQL or the Context Filter.

What is referential integrity?

What are the platforms Tableau server can run on?

Tableau server can run on Windows and Mac.

Explain and show how to implement the serialization of a binary tree.

.You can write serialization for leaf nodes, and then for parent nodes.
Recursive map. {value. [serialize(left), serialize(right)]}, where serialized leaf is null.

What is Tableau?

. Tableau is a business intelligence software.
It allows anyone to connect to the respective data.
Visualizes and creates interactive, shareable dashboards.

How many maximum tables can you join in Tableau?

. You can join a maximum of tables in Tableau.

What are sets?

Sets are custom fields that define a subset of data based on some conditions. A set can be based on a computed condition, for example, a set may contain customers with sales over a certain threshold. Computed sets update as your data changes. Alternatively, a set can be based on the specific data point in your view.

What is the difference between .twb and .twbx extension?

A .twb is an XML document which contains all the selections and layout made you have made in your Tableau workbook. It does not contain any data.
A .twbx is a ‘zipped’ archive containing a .twb and any external files such as extracts and background images.

What is a hierarchical field?

A hierarchical field in tableau is used for drilling down data. It means viewing your data in a more granular level.

What are the different filters in Tableau and how are they different from each other?

In Tableau, filters are used to restrict the data from database.
The different filters in Tableau are. Quick, Context and Normal/Traditional filter are.

Normal Filter is used to restrict the data from database based on selected dimension or measure. A Traditional Filter can be created by simply dragging a field onto the ‘Filters’ shelf.
Quick filter is used to view the filtering options and filter each worksheet on a dashboard while changing the values dynamically (within the range defined) during the runtime.
Context Filter is used to filter the data that is transferred to each individual worksheet. When a worksheet queries the data source, it creates a temporary, flat table that is used to compute the chart. This temporary table includes all values that are not filtered out by either the Custom SQL or the Context Filter.

What are groups?

A group is a combination of dimension members that make higher level categories. For example, if you are working with a view that shows average test scores by major, you may want to group certain majors together to create major categories.

How to remove ‘All’ options from a Tableau auto-filter?

The auto-filter provides a feature of removing ‘All’ options by simply clicking the down arrow in the auto-filter heading. You can scroll down to ‘Customize’ in the dropdown and then uncheck the ‘Show “All” Value’ attribute. It can be activated by checking the field again.

What are Extracts and Schedules in Tableau server?

Data extracts are the first copies or subdivisions of the actual data from original data sources. The workbooks using data extracts instead of those using live DB connections are faster since the extracted data is imported in Tableau Engine. After this extraction of data, users can publish the workbook, which also publishes the extracts in Tableau Server. However, the workbook and extracts won’t refresh unless users apply a scheduled refresh on the extract. Scheduled Refreshes are the scheduling tasks set for data extract refresh so that they get refreshed automatically while publishing a workbook with data extraction. This also removes the burden of republishing the workbook every time the concerned data gets updated.

What is story in Tableau?

Mention what is the difference between published data sources and embedded data sources in Tableau?

The difference between the published data source and embedded data source is that,

Published data source. It contains connection information that is independent of any workbook and can be used by multiple workbooks.
Embedded data source. It contains connection information and is associated with a workbook.

So, this brings us to the end of the Tableau Server Interview Questions blog. This Tecklearn ‘Top Tableau Server Interview Questions and Answers’ helps you with commonly asked questions if you are looking out for a job in Tableau Server or Business Intelligence Domain. If you wish to learn Tableau Server and build a career in Business Intelligence domain, then check out our interactive, Tableau Server Training, that comes with 24*7 support to guide you throughout your learning period.

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Tableau Server Administration

About the Course

Tecklearn’s Tableau Server training builds all the necessary skills required to work in the Tableau Server domain. It enables you to master the core concepts of Tableau Server 10 through hands-on training sessions. You will be well-versed in the aspects of Server processes, reconfiguration, creation of dashboards, publishing data sources, troubleshooting and database maintenance.

Why Should you take Tableau Server Administration Training?

The average salary of a Tableau Professional ranges between $108,697 to $158,000 per annum -Indeed.com.
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Fidelity Investments, Capgemini, EY, Deloitte, EY, JP Morgan, Verizon, Facebook, Dell, General Motors, KPMG, Bank of America and 40,000 other MNCs worldwide across industries use Tableau.

Curriculum

Tableau Server Overview

Understanding Tableau Products
Understanding day to day responsibilities of Admin
Desktop-Server overview

Tableau Single Server Installation

Server components/Processes and Functions
Before installing server – Technical Specifications & Checklist
Installation
Configuring Server Installation options
Resolutions for Common Installation Issues
Understanding high-availability

User Experience

Creating Tableau admin/User credentials
Understanding Content Navigation, searching and filtering
Setting Custom Start page per user
Creating new Site, project, User, and Group
Mapping Users to Groups
Server Administrator Vs Site Administrator
Publishing data Source
Web authoring:Editing views directly in server
Modifying Admin Settings
Customizing Server for Enterprise

Monitoring Tableau Server

Viewing Server Status
Built-in admin views
Licensing information
Performance Recording

Security

Security overview

Authentication

Active Directory or Local authentication and
Single sign-on options
Assigning permissions to Projects
Changing content Ownership

Authorization

Site roles and Permissions

Data Security

Row Level Security-Understanding multiple ways of controlling what users can access
Network Security

Extracts, Schedules and Subscriptions

Publishing Extracts
Understanding Backgrounder tasks
Extract refresh
Subscriptions
Revision History: Saving copies of workbooks

Tableau Log File Administration

Overview and Generating snapshot of Logs

Automating and Programming Server tasks

Tabcmd: Automate tasks
Tabadmin: Change Server configuration
REST API: Manage and change Server resources programmatically
JavaScript API: Hosting your viz over web

Upgrading Tableau Server

Understanding When/How to upgrade with different real-time scenarios
Modifying the Authentication method

Performance Tuning of Tableau Server

Understanding alerts, Monitoring, Tuning and Troubleshooting

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