file organization, Database Management System

random file orgnization
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Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.

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What is database Trigger? A database trigger is a PL/SQL block that can explained to automatically execute for insert, update, and delete statements against a table. The trigge

Benefits: It limits data access. It makes difficult queries look easy. It permits data independence. It presents dissimilar views of the similar data.