ETL Testing Multiple-Choice Questions (MCQs)
Q. What does ETL stand for in data processing?
Extract, Transform, LoadEvaluate, Test, Launch
Enable, Transfer, Log
Extend, Translate, Link
Q. What is the primary purpose of ETL Testing?
To ensure the software UI is user-friendlyTo verify data is accurately extracted, transformed, and loaded
To test the network connectivity
To check the database performance
Q. Which phase of ETL testing involves comparing source data with target data?
Production Validation TestingSource to Target Count Testing
Source to Target Data Testing
Metadata Testing
Q. What is Data Profiling in ETL testing?
Creating user profiles for data accessAnalyzing source data to understand its content, structure, and quality
Profiling the performance of ETL jobs
Creating profiles of data warehouse users
Q. What does NULL value testing check for in ETL?
The presence of empty stringsThe correct handling of NULL values during transformation
The speed of processing NULL values
The number of NULL values in the source data
Q. What is the purpose of Incremental ETL Testing?
To test only new or updated data since the last ETL runTo gradually increase the volume of test data
To test the ETL process in small increments
To incrementally improve the ETL process
Q. What is the main focus of Data Transformation Testing in ETL?
Testing the extraction processVerifying that data is correctly transformed according to business rules
Checking the loading speed of data
Validating the data warehouse schema
Q. What is the purpose of Metadata Testing in ETL?
Testing the accuracy of data descriptionsVerifying the transformation rules
Checking the data loading process
Validating the extraction queries
Q. What is the primary goal of Production Validation Testing in ETL?
To test the ETL process in a development environmentTo verify the ETL process works correctly in the production environment
To validate the production data before ETL
To test the production hardware
Q. What does Source to Target Count Testing involve in ETL?
Comparing the number of records in source and target systemsCounting the number of ETL processes
Measuring the time taken for data transfer
Counting the number of errors during ETL
Q. What is the purpose of Data Quality Testing in ETL?
To ensure data meets defined quality standards and business rulesTo test the quality of ETL tools
To measure the speed of data processing
To validate the database schema
Q. What is a primary key test in ETL testing?
Testing the speed of primary key lookupsVerifying the uniqueness of primary key values in the target system
Checking if all tables have primary keys
Testing the primary ETL process