There are multiple reasons why database testing is performed. There is a need to perform data integrity, validation and data consistency check on database as the backend system is responsible to store the data and is accessed for multiple purpose.
Some of the common reasons why one needs to perform Database testing are as follows :
* To ease the complexity of calls to database backend, developers increase the use of View and Stored Procedures.
* These Stored procedures and Views contain critical tasks such as inserting customer details (name, contact information, etc.) and sales data. These tasks need to be tested at several levels.
* Black box testing performed on front-end is important, but makes it difficult to isolate the problem. Testing at the backend system increases the robustness of the data. That is why database testing is performed on back end system.
* In a database, data comes from multiple applications and there is a possibility that harmful or incorrect data is stored in the database. Therefore, there is a need to check database components regularly. In addition, data integrity and consistency should be checked regularly.
