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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.)
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Differentiate between logical database design and physical database design. Show how this separation leads to data independence? Basis Logical Databas
milestone assignment
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define locking in simple language and decribed it
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