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Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
usecase diagram,activity diagraM,SEQUENCE DIAGRAM
How can i turn a conceptual entity relationship diagram into a logical entity relationship diagram? what do i have to do with "mandetory or" and "optional or" relationships?
Q. Explain the terms key constraints participation constraints and mapping caradinalities in ER model. Participation Constraints : The participation of an entity set E i
Process of normalization is the integral part of designing a database. Justify this statement with suitable database design
Question : Object-Oriented Database (OODM) is defined as a logical data model that captures the semantics of objects supported in object-oriented programming. An Object-Oriente
In this programming assignment, you will develop a simple database of student records. Here are the requirements: 1) A student record contains a name and a number. We assume tha
Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
note on hashing technique
Concurrency Identification While designing analysis, model we map real world model into our analytical model. Real life objects are simultaneous in nature, but all the design
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