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Relational Algebra is a set of basic operations used to influence the data in relational model. These operations allow the user to specify basic retrieval request. The result of re
Explain the concept of generalization and aggregation in E_R diagrams. Give one example for each one of them? Generalization: Consider extending the entity set account throug
Explain how the associations are implemented as classes. A general approach in this case is to transform an association class into a simple class linked to two original classes
HOW MANY TYPES OF VIEWS
WHAT IS DSS? WRITE ITS REQUIREMENTS.
online eductional management system ke diagram
Need a sample of a clinic database relationships
What do you mean by atomicity and aggregation? Atomicity : Either all actions are carried out or none are. Users should not have to worry about the effect of incomplete trans
explain participation constraints with examples
System Design: An Object Oriented Approach Any software systems always try to change and evolve as technology and business rules evolve. The development of information systems
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