What is a key and give examples – InterviewSolution

1.	What is a key and give examples
Answer» A DBMS key is an attribute or set of an attribute which helps you to identify a row(tuple) in a RELATION(table). They allow you to FIND the relation between two tables. Keys help you uniquely identify a row in a table by a combination of one or more columns in that table. EXAMPLE: Employee ID.Explanation:

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