Tableau Questions et reponses d'entretien
Question 11. What is the difference between a discrete and a continuous field in Tableau?
A discrete field contains distinct, separate values and is often categorical. A continuous field, on the other hand, represents a range of values and is typically numerical. Discrete fields are used for dimensions, and continuous fields are used for measures.
Question 12. Explain the concept of blending in Tableau.
Data blending in Tableau is the process of combining data from multiple data sources in a single view. It is often used when the data required for analysis comes from different sources, and a relationship between the sources needs to be established.
Question 13. How can you create a calculated table in Tableau?
To create a calculated table, you can use the Data pane. Right-click on a blank space in the Data pane, select 'Create Calculated Table,' and define the calculations and columns you need. This feature allows you to create tables based on calculated expressions.
Question 14. What is the Tableau Repository, and where is it located?
The Tableau Repository is a directory on the computer where Tableau Desktop is installed. It contains configuration files, logs, and other settings related to Tableau. The default location is 'My Tableau Repository' in the 'Documents' folder.
Question 15. How can you create a trend line in Tableau?
To create a trend line in Tableau, right-click on a measure in the view, hover over 'Trend Lines,' and choose the appropriate type (linear, logarithmic, etc.). Trend lines help in identifying patterns and trends in data.
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