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Triggers and Stored Procedures, Database Management System
10A.53 Code an Oracle Database trigger to enforce the constraint that an employee can
never change his or her department.
10A.54 Code an Oracle Database trigger to allow the deletion of a department if it
only has one employee. Assign the last employee to the Human Resources
10A.55 Design a system of triggers to enforce the M-M relationship. Use Figure 10A-53 as an
example, but assume that departments with only one employee can be deleted.
Assign the last employee in a department to Human Resources.
Posted Date: 12/8/2012 9:56:14 PM | Location : United States
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