Tableau Desktop Certified Professional — Question 79

In an extract, what are three differences between a full refresh versus an incremental refresh? (Choose three.)

Answer options

• A. An incremental refresh can only be run from Tableau Server.
• B. A full refresh is usually very slow. An incremental refresh can take less time.
• C. A full refresh replaces all the extracted data with the data in the underlying data source.
• D. An incremental refresh only adds rows that are new
• E. A full refresh must be configured. An incremental refresh is the default extract in Tableau.

Correct answer: B, C, D

Explanation

Option B is correct because a full refresh is slower due to the need to replace all data, while an incremental refresh is designed to be quicker. Option C is accurate as it describes the full refresh process of replacing all data with the latest from the source. Option D is also correct because an incremental refresh only adds new rows rather than replacing existing data. Option A and E are incorrect because they misrepresent the capabilities and configurations of refresh types.