sql, Database Management System

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ER diagram, construct an er diagram for a hospital with a set of patients a...

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What is relationship instance ? Relationship Instance - A relationship is a relation between two or more entities. An instance of relationship set is a set of relationships.

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What is a Name? A user-supplied name is used for identity. This form of identity is used for files in file systems. The user gives every file a name that uniquely identifies it

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What do you understand by a view? What does WITH CHECK OPTION clause for a view do? - A view is a virtual table which comprises fields from one or more real tables. - It is

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Explain What is Relation? A database relation is a predefined row or column format for storing information in a relational database. Relations are equal to tables.

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