Explain authorization and integrity manager, Database Management System

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Explain Authorization and Integrity Manager ?

Authorization and Integrity Manager: Tests for the satisfaction of integrity constraints and checks the authority of users to access data.


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What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.

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Consider employee table of (i) and list names of department(s) for which average salary for department is more than 10,000. (SELECT d_name FROM dept WHERE d_code IN (SELECT d_c

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