COMPUTER APPLICATIONS
DATABASE MANAGEMENT SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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An entity set that does not have enough attributes to form primary key is known as
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STRONG ENTITY SET
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WEAK ENTITY SET
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IDENTITY SET
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OWNER SET
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Explanation:
Detailed explanation-1: -A weak entity set is an entity set that does not contain sufficient attributes to identify its records uniquely. And the entity set that has sufficient attributes to identify its records uniquely is called a strong entity. In more simple words, a weak entity is an entity that does not have a primary key attribute.
Detailed explanation-2: -The primary key of a weak entity set is formed by the primary key of the strong entity set on which the weak entity set is existence depend, plus the weak entity sets discriminator.
Detailed explanation-3: -Explanation: An entity set that has a primary key is termed a strong entity set.
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