An ETL process is at the heart of any data centric system/ project be it Data Migration or Data Warehouse. All the data movement, transformation, and conversions are done by the ETL process in order to ensure that all the data is uniform in terms of quantity, quality, and format. So, why is ETL testing…
Normally, the ETL developers as part of the development effort will do unit ETL testing of the ETL processes. These test include some spot tests and summary tests. A unit ETL test is a test written by the programmer to verify that a relatively small piece of ETL code is doing what it is intended…
In the previous blog post, the question was raised as to how to test an ETL process? So today we will talk about the basic concept of ETL testing and Data Warehouse testing. The answer lies in the understanding of an ETL process. An ETL process at its core reads data, applies a transformation on…
At the core, quality is the measurement of deviation between what is expected vs. actual. In quality assurance practice, we implement a set of tests to measure this deviation. The extent of the deviation indicates the quality of the software. In any application testing, there are three common terms that we will notice: Requirements Test…