After entering the data from the front-end application interface, how do you test whether a database is updated or not

It totally depends on the application interface that you are using. These are some following ways,

• You can verify only from the front-end when application interface shows view functionality of the data you enter. Mainly, Black box test engineers do this functionality verification test in this way.

• If application interface doesn’t provide view functionality of the data you enter, then you can check for database update by using relevant SQL/Oracle query.