What does aggregation and composition mean?

Composition and aggregation are two types of association which is used to represent relationships between two classes . In Aggregation , parent and child entity maintain Has-A relationship but both can also exist independently. We can use parent and child entity independently.21 Oca 2020

Aggregation means one object is the owner of another object . Composition means one object is contained in another object. The direction of a relation is a requirement in both Composition and Aggregation.12 Oca 2022

Composition and aggregation are two types of association which is used to represent relationships between two classes . In Aggregation , parent and child entity maintain Has-A relationship but both can also exist independently. We can use parent and child entity independently.21 Oca 2020