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One to One Relationship Cardinality in DBMS
One to One Relationship Cardinality
On this page, we will learn about the one to one Relationship Cardinality in DBMS.
One to One Relationship Cardinality in DBMS
Cardinality tells how many times the entity of an entity set participates in a relationship
There are four different types of cardinalities one to one, many to one, one to many, many to many, here will discuss how one to one cardinality is observed.
One to One cardinality
- When a single instance of an entity is associated with a single instance of another entity, then it is called as one to one cardinality
- Here each entity of the entity set participate only once in the relationship
Example for one to one cardinality
Assume that the only male can be married to only one female and one female can be married to only one male, this can be viewed as one to one cardinality.
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