Degree of relationship set

1. DEGREE OF A
RELATIONSHIP
SET
DBMS
In Hindi

2. Relationship Set
Relationship is an association between two or more entities of same or different
entity set. A set of relationships of same type is known as relationship set.
Student Course
Enrolled
in
S1
S2
S3
E1
E2
E3
C1
C2
C3

3. Degree Of A Relationship Set
The number of different entity sets participating in a relationship set is called as degree
of a relationship set.
1.Unary Relationship
When there is only ONE entity set participating in a relation, the relationship is
called as unary relationship.
Employees Manage

4. 2.Binary Relationship
When there are TWO entities set participating in a relation, the relationship is
called as binary relationship. For example, Student is enrolled in Course.
Student Course
Enrolled
in

5. 3.Ternary Relationship
When there are Three entities set participating in a relation, the relationship is
called as Ternary relationship.
Employees Departments
Works
In
Location

6. 4.N-ary Relationship
N-ary Relationship
When there are n entities set participating in a relation, the relationship is called as
n-ary relationship.

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