Managing databases, Database Management System

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Code an Oracle Database trigger to enforce the constraint that an employee can
never change his or her department.

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Draw an EER diagram that captures the "is-a" hierarchy of students in another simple database. The database captures both the "basic" information (say, student ID and student name)

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What are advantages of object models? Object models are efficient for communicating with the application experts and reaching a consensus about the significant aspects of the p

Explain nested relations, Explain nested relations? Nested relations ...

Explain nested relations? Nested relations The assumption of INF is a natural one in the bank examples we have considered. However, not all applications are best modelled

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