Database testing/Back-end testing is very important. If there is any bug in the database that bug may cause a severe problems like – dead-locking, data corruption, poor performance etc. These bugs are very difficult to find in manual testing / front-end testing.
So for all-rounder testers, knowledge of Database testing/SQL testing / Backend testing is very important.
Below are some free Database testing tutorials, through which you will learn about the following:
1. Why DB testing is important?
2. How DB testing is carried out?
3. SQL queries