entity relationship model, Database Management System

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define attribute inheritance with example?

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What is 2NF? A relation schema R is in 2NF if it is in 1NF and every non-prime attribute A in R is fully functionally dependent on primary key.

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Explain the differences between structured data and unstructured data. Structured data are facts concerning objects and events. The most significant structured data are numeric

Deletion operation - update operations, By using the delete operation some ...

By using the delete operation some consisting records can be deleted from a relation. To delete some definite records from the database a condition is also specified based on which

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