Please explain the functionality of Datagaps ETL Validator and how it operates. Datagaps ETL Validator, created by Datagaps, is a testing tool specifically designed for ETL validation and the validation of ETL processes during data migration. It is considered one of the leading ETL testing tools in the industry and offers numerous advantages and features compared to its competitors. The tool includes a built-in ETL engine that can efficiently extract and compare large volumes of data from multiple sources, all while executing test cases simultaneously.
