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An attribute of an entity type for which each entity must have a unique value is called a key attribute of the entity type. Suppose,
An attribute of an entity type for which each entity must have a unique value is called a key attribute of the entity type. Suppose, an entity employee has the attributes include Address, Sex, SSN Name. Which of the following is a key attribute?
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Address
Sex
SSN
Name
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Data Management Databases And Organizations
Authors: Watson Watson
5th Edition
0471715360, 978-0471715368
