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ETL Testing Practice Test Questions
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ETL Testing is a process of verifying the accuracy of data that has been loaded from source to destination.

An ETL tool extracts the data from all these heterogeneous data sources, transforms the data (like applying calculations, joining fields, keys, removing incorrect data fields, etc.), and loads it into a Data Warehouse.

ETL Testing Practice Test Questions
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25 Questions

1. ETL is often used to build a -
2. The data accuracy of both the source and the target can be checked with a set of ____ operators.
3. We test the data ____ to ensure that data loading and transformation is accurate.
4. Bugs that check for minimums and maximums are called ____ bugs.
5. ____ validation should be done for reports.
6. A ____ compares the data between a source system and a target system without transforming the data in either system.
7. Which of the following is the last step of the ETL process?
8. ____ can be simplified using ETL tools.
9. The term is ETL now extended to ____ or Extract, Monitor, Profile, Analyze, Cleanse, Transform, and Load.
10. Whatever extraction method we use, the source system should not be affected in terms of ____ time.
11. It is important to focus on the surroundings of the sources in ____ analysis, so that the documentation of the sources can be obtained.
12. In addition to using ____, the data can be combined with other data to undergo transformation.
13. Tests are automatically generated for ____, which saves test developers' time.
14. Performance and stress tests are conducted by ____.
15. An ETL tool simplifies the task of ____ and integrating multiple data sets when dealing with complex rules and transformations.
16. During ____, the main goal is to capture data as quickly as possible from a system while minimizing the inconvenience to the system.
17. Getting information from a database is called ____ (reading).
18. To ensure that the data don't compromise production systems, ____ automates ETL testing and management.
19. Mathematical errors show up in ____ bugs, and the results are usually inaccurate.
20. ETL tool function is a ____-layered structure.
21. ____ refers to data that does not need to be transformed.
22. When an application is upgraded, the extracted data from the old application is checked against the new application's data to ensure that they are ____.
23. Using an ____ tool, data is extracted from multiple data sources, transformed, and loaded into a data warehouse after joining fields, calculating, and removing incorrect data fields.
24. Which of the following is/are the stage(s) the ETL testing?
25. ____ reports are tested for navigation and GUI aspects by GUI/Navigation Testing.

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