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In this #viralvideo we will go through in detail #mustwatch #tableauinterviewquestions with detailed Explaination. These questions are something you should definetly know.
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1. What is Tableau?
= Tableau is a Data visualization tool that allows us to connect to data data sources and generate results instantly.
2. What are the different Tableau products?
= Tableau Desktop = Development of Reports ( Licensed Product)
= Tableau Server = Physical Server(Install on Highly configured) - Tableau Admin
= Tableau Online = Cloud based application
= Tableau Reader =
= Tableau Public = anything that you publish here is publicly available to everyone in this platform. do not publishing any sensitive data.
2023 = Experience on Tableau(create workbook in tableau public) - Encourage - Play with Tableau
Definitely to know the difference b/w Tableau Desktop and Tableau Public.
= Tableau Mobile = the layout according to the mobile devices. ( Android and Ios)
= Tableau Prep =
3. What are the different data types in Tableau?
= string Functions
= Date Functions
= Date & Time Function
= Numeric Function
= Boolean
= Spatial Functions
4. What are the different types of joins in Tableau?
= LEFT, RIGHT, INNER, OUTER (to have your SQL also ready for each type of join)
SQL for 4 types of Joins - Expected output for that Join
5. How many maximum tables can you join in Tableau?
= 32
6. Name all of the types of filters available in Tableau?
7. What’s the order of operations for filters?
8. What are the components of a dashboard in Tableau?
9. What are the different connections you can make with your dataset?
= Live and Extract connection = Which type of connection have you used in your project - b
10.What is data aggregation and disaggregation in Tableau?
=
Region --- 400 Aggregated (SUM(SALES)) 100
N - 100
E - 100
S - 100
W - 100
11. What’s the rank function in Tableau?
DIFFERENCE B/W rank and Index()- Number generation on no of rows of data that is available
DENSE, UNIQUE,MODIFIED, PERCENTILE, RANK -- Lot of Importance in real time also
12. What’s the difference between data blending and data joining?
data from different sources - Excel, sql (Blending )
data from different tables - joins(Number of Joins available)
13. What’s the difference between a worksheet, dashboard, story, and a workbook in Tableau?
- Worksheet - Development (actually create your charts)
- Dashboard - Collection of worksheets(together Narrate a Situation or Scenario)
- Story Point - Worksheet / dashboard
- Tableau workbook - Report
How many dashboards/Reports you have - Cross check with the interviewer
14. What’s the difference between parameters and filters in Tableau?
15. What’s the difference between Tableau current and Previous Versions
16. What’s the difference between .twb and .twbx file extensions?
- Tableau workbook -- without the underlying data. - connected to the data source
- Packaged workbook - workbook along with underlying data is also save.
17. When would you use Extract connection over Live connection?
18. What is VIZQL?
19. What’s the point of a LOD calculation?
20. Is it better to use a custom SQL join or a Tableau-made join?
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