Cardinality Constraints Minimum and Maximum Cardinality in DBMS |Types of Binary Relationships 

The maximum number of relationships is called cardinality. The cardinality constraint specifies the number of instances of one entity that can be associated with each instance of the other entity.
Minimum Cardinality:
The minimum number of instances of one entity that may be associated with each instance of another entity is known as minimum cardinality.
Maximum Cardinality:
The maximum number of instances of one entity that may be associated with each instance of another entity is known as maximum cardinality
What is Cardinality,
Mandatory cardinality,
Optional Cardinality,
Cardinality in Databases,
One to One Relationship,
One to Many Relationship,
Many to Many Relationship
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