Entity Relational Diagram, Database Management System

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Define DBA database administrator? DBA : A database administrator (DBA) is a person who is responsible for the environmental aspects of a database. In common, these involves:

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What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.

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How to create values of structured type? Constructor functions are used to make values of structured types. A function with the similar name as a structured type is a construct

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