Differbetween
Aggregation implies a relationship where the child can exist independently of the parent. Example: Class (parent) and Student (child). Delete the Class and the Students still exist. Composition implies a relationship where the child cannot exist independent of the parent.
- What is difference between aggregation and composition?
- What is the difference between association aggregation and composition in C#?
- What is aggregation in UML?
- What is difference between association aggregation and inheritance relationships?
- How many types of association are there?
- What is Association and its types?
- What is aggregation example?
- What is polymorphism in C#?
- Is A and has-a relationship in C#?
What is difference between aggregation and composition?
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. ... In Composition, parent owns child entity so child entity can't exist without parent entity.
What is the difference between association aggregation and composition in C#?
Association, aggregation and composition terms represent the relationship between the objects. They are very basic stuff of Object oriented programming.
...
Association, Aggregation and Composition.
| Aggregation | Composition |
|---|---|
| Aggregation means one object is the owner of another object. | Composition means one object is contained in another object. |
What is aggregation in UML?
In UML models, an aggregation relationship shows a classifier as a part of or subordinate to another classifier. An aggregation is a special type of association in which objects are assembled or configured together to create a more complex object.
What is difference between association aggregation and inheritance relationships?
An employee object is associated with manager object. Aggregation is “a part of” relationship. Example: ... Inheritance is a “is a “relationship where one or more classes are derived from a base class.
How many types of association are there?
The three types of associations include: chance, causal, and non-causal.
What is Association and its types?
An association type (also called an association) is the fundamental building block for describing relationships in the Entity Data Model (EDM). ... An association can, however, define a self-relationship by specifying the same entity type for each of its association ends.
What is aggregation example?
Aggregation implies a relationship where the child can exist independently of the parent. Example: Class (parent) and Student (child). Delete the Class and the Students still exist. Composition implies a relationship where the child cannot exist independent of the parent.
What is polymorphism in C#?
Polymorphism is a Greek word, meaning "one name many forms". In other words, one object has many forms or has one name with multiple functionalities. "Poly" means many and "morph" means forms. Polymorphism provides the ability to a class to have multiple implementations with the same name.
Is A and has-a relationship in C#?
2.1. Relationship of type has-a (has-a relationship). In this case, one or more objects of another class are declared in the class. ... A class can use only some method of another class, a class can access the name of another class (use the name), a class can use the data field of another class, etc.
