In previous article we learned about “What Is Difference Between SDET And TESTER?” In today’s class we are going to cover What is importance of ETL testing and Data Warehousing, importance, testing classifications, testing procedures etc.
Introduction on ETL Testing:
ETL stands for Extraction, Transformation and Loading of data. In data warehousing, data from multiple data sources is extracted, transformed (as per the business logic and data definition of target database) and loaded into cohesive database. Data warehouse efficiently handles