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Cardinality shows the number of instances of an entity associated with another entity participating in a relationship. Depend on the cardinality binary relationship can be further dividing into the following categories:
Example: Relationship between university/college and principal
One college only have at the most one principal and one principal can be assigned to only one college.
Likewise we can define the relationship among Vice Chancellor and university.
what is RDBMS? how it works? good example.
explain ER Modeling?
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Implementation of association as an object Implement as a separate association object, independent of either class, as in Figure. An association object is a group of pairs
losers with new information systems
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