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Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
What is OLTP (Online Transaction Processing)? In OLTP - online transaction processing systems relational database design use the discipline of data modeling and generally follo
what does glory be mean
It is mandatory that for every table in the LDB hierarchy there should exist one GET statement in the report. False. It is not essential.
random file sharing
How many types of users works on database? Users are differentiated through the way they expect to interact along with the system (i) Application programmers-interact with
Explain the use of constraints in functional model with suitable example. A constraint shows relationship between two objects at same time, or among various values of the sam
aggregation
WOUND-WAIT
What is inheritance? Inheritance is an object orientation concept that allows reusability of code / design. Basic sense of inheritance is that if one class is predefined than a
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