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Define an abstraction by which relationships are treated as higher level entities
Ans: Aggregation.
It is an abstraction by which relationships are treated as higher level entities Aggregation. (In ER diagram, aggregation is utilized to denote a relationship as an entity set.)
why are older data models are being replaced by new data models
need to get answer for questions 3&4 on this page in part 1
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milestone assignment
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