Tableau Server Interview Questions
1. 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
- Unlicenced
2. 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
3. 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 time 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.
4. What is Data Visualization?
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 big data in leveraging the full potentiality.
5. 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.
6. 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)
7. Do parameters contain a drop-down list?
Yes, the parameters do have the drop-down list
8. What is the difference between TWB and TWX?
TWB: it is an XML document which is made ready for you for the Tableau workbook. Which contains no data.
TWX: it is a Zipped’ one which contains data like background images, file extracts, etc.
9. 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.
10. What are the Platforms that tableau can run on?
Tableau can run on Mac and Windows.
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