Database Testing

https://en.wikipedia.org/wiki/Database_testing

Database testing:
Data consistency is also very important in web application. 

Check for data integrity and errors while you edit, delete, modify the forms or do any DB related functionality.

Check if all the database queries are executing correctly, data is retrieved and also updated correctly. 
More on database testing could be load on DB.

 Database Testing:

Database is one critical component of your web application and stress must be laid to test it thoroughly. Testing activities will include-

• Test if any errors are shown while executing queries
• Data Integrity is maintained while creating, updating or deleting data in database.
• Check response time of queries and fine tune them if necessary.
• Test data retrieved from your database is shown accurately in your web application