ETL Testing Part 2 - Operational Data Testing
This is the second part of a series on ETL testing, the first part explained about unit testing, and in this part, we will talk about how we can prove the correctness of the actual data, both today and in the future after every ETL run.
Testing ETL processes is a multi-layered beast, we need to understand the different types of test, what they do for us, and how to actually implement them.