ETL Testing challenges

ETL testing is quite different from conventional testing. There are many challenges we faced while performing data warehouse testing. Here is the list of few ETL testing challenges I experienced on my project:

• - Incompatible and duplicate data.
• - Loss of data during ETL process.
• - Unavailability of inclusive test bed.
• - Testers have no privileges to execute ETL jobs by their own.
• - Volume and complexity of data is very huge.
• - Fault in business process and procedures.
• - Trouble acquiring and building test data.
• - Missing business flow information.

Data is important for businesses to make the critical business decisions. ETL testing plays a significant role validating and ensuring that the business information is exact, consistent and reliable. Also, it minimizes hazard of data loss in production.