0 What is CRUD Operations in Database

CRUD is the acronym for Create, Read, Update and Delete. Create, Read, Update and Delete (CRUD) are the 4 basic functions of a Database or persistent storage. CRUD refers to all of the major functions that need to be implemented in a RDBMS.
Each letter in the CRUD can be mapped to a standard SQL statement:

Create        INSERT
Read        SELECT
Update        UPDATE
Delete        DELETE