OojohnnyoO460 OojohnnyoO460

11-11-2017
Mathematics

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An entity with two multivalued attributes will be mapped as how many relations

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meerkat18 meerkat18

23-11-2017

There are so many relationships between the original entity and new relation.
The relation mapped from an entity involved in a 1:1 unary relationship contains a foreign key that correspond to its own primary key. 1 to one foreign key will be unique.

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