Database Management SystemPU Spring 2023
a) Differentiate between database schema and instances. Briefly describe DDL, DML and DCL. b) Define relational data model. Draw an E R diagram for a Library Management System including primary key,…
15- a) Differentiate between database schema and instances. Briefly describe DDL, DML and DCL.
- b) Define relational data model. Draw an E-R diagram for a Library Management System including primary key, weak entity, composite attribute, derived attribute and multivalued attributes in your ER diagram.
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