Database Operations and Constraint Violations in DBMS – The Insert Operation The basic Database operations performed on a relation are – Insert Operation – The insert operation is used to insert a new tuple(s) on relations. Delete Operation – The delete operation is used to delete the tuple(s). Update or Modify Operation – The update operation is used to change/update…

Database Operations and Dealing with Constraint Violations- The Delete Operation The Delete Operation : Consider two existing relations named EMPLOYEE and DEPARTMENT. Some Basic Points about the Figure – Here, ENO is a Primary Key and DNO is a Foreign Key in EMPLOYEE relation. Table that contain candidate key  is called referenced relation and The…

Types of Constraints in DBMS or Relational Constraints in DBMS with Examples-  What are Database Constraints in DBMS ?? Database constraints are restrictions on the contents of the database or on database operations. It is a condition specified on a database schema that restricts the data to be inserted in an instance of the database. Need of…