Relationship in Database Relationship In Database: A relationship is an association between the instances of one or more entity types in the database which represents some information. For example, a…
One to one Relation
One To One Relation: In one-to-one relationship, two entity types are associated in such a way that for each instance in first entity type, there is only one matching instance in second entity type.
For example the relationship between COUNTRY and CAPITAL and PRINCIPAL and COLLEGE can be shown as