Describe database state in details, Database Management System

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Describe Database state in details?

Database state: The actual data within the database at a particular moment in time is known as a database state.


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Create a database schema, Consider a database schema consisting of four rel...

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These permit the user to unload a database or parts of a database and reload the data on the similar machine, or on another machine in a dissimilar location. This can be useful in

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Explain Candidate Key and Super Key A super key is a set of one or more than attributes that, taken collectively, permits us to identify uniquely a tuple in the relation. Wher

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Set Difference If R1 and R2 are two union compatible relations or relations then result of R3 =R1- R2 is the relation that have only those tuples that are in R1 but not in R2.

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