A ________ is an association between entities.

The correct answer is A. Relation. A relation is a type of association that describes how two or more entities are related to each other. A relation can have different properties, such as cardinality, optionality, and directionality, that specify the nature and constraints of the association. A relation can also…

IT Operations and Infrastructure Management

Question

Options

ARelation
BCategorization
CGeneralization
DSpecialization

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A
94% (29)
B
3% (1)
D
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Explanation

A relation is a type of association that describes how two or more entities are related to each other. A relation can have different properties, such as cardinality, optionality, and directionality, that specify the nature and constraints of the association. A relation can also have attributes that store information about the association. For example, a relation between Employee and Project entities can have an attribute called Role that indicates the role of each employee in each project. A relation can be represented by a line connecting the entities in an entity-relationship diagram

Topics

#ER diagram#entity relationship#database modeling

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