Please enable JavaScript.
Coggle requires JavaScript to display documents.
define relationship and relationship set, Binary relationship set - Coggle…
define relationship and relationship set
relationship
another example of the relationship in DBMS is-
Rohit plays football.
Therefore, here Rohit and football are entities, and plays are the relationship between them
The driver drives a car.
In the above example, the driver and the
car
are entities whereas the word drives is a relationship between those entities.
Any association between two entities is known as a relationship between those two entities
relationship set
relationship set represents a collection of relationships between entities in a database.
The number of entity sets that participate in a relationship set is termed as the degree of that relationship set
On the basis of degree of a relationship set, a relationship set can be classified into the following types
unary relationhip set
Unary relationship set is a relationship set where only one entity set participates in a relationship set.
binary relationship set
Binary relationship set is a relationship set where two entity sets participate in a relationship set
ternary relationship set
Ternary relationship set is a relationship set where three entity sets participate in a relationship set.
n ary relationship set
N-ary relationship set is a relationship set where ‘n’ entity sets participate in a relationship set.
Binary relationship set