COMPUTER APPLICATIONS
DATABASE MANAGEMENT SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A collection of objects or things that can be distinguished or uniquely identified____
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Entity
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Attribute
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Relationship
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Indicator
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Cardinality
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Explanation:
Detailed explanation-1: -The primary key is an attribute or a set of attributes that uniquely identify a specific instance of an entity. Every entity in the data model must have a primary key whose values uniquely identify instances of the entity.
Detailed explanation-2: -An entity Type is defined as a collection of entities, which share a common definition in terms of their attributes. Each entity type is assigned a name for its subsequent identification. The values of attributes of an entity belonging to entity type are known as Entity Instance.
Detailed explanation-3: -There are two types of entity in database management: tangible and intangible.
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