Which database level is closest to the users, Database Management System

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Which database level is closest to the users?

External database level is closest to the users.

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Illustrate the cardinality of relationship, Cardinality of Relationship ...

Cardinality of Relationship One-to-One Only one entity of the first set is linked to only one entity of the second set. E.g. A teacher teaches a student. Only one teacher

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Prove that a relation which is 4nf must be bcnf, Prove that a relation whic...

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