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Discuss how the bi-directional Implementations are made.
In bi-directional implementation of the association, a pair of references must implement every link. The declarations and code essential to support such implementations are same as required in unidirectional implementation. The single difference is that suitable fields have to be declared in both the classes participating in an association.
Need a sample of a clinic database relationships
About Attribute inheritance
usecase diagram,activity diagraM,SEQUENCE DIAGRAM
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what do you understand by enhanced entity-relationship
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