Aggregation models the whole/part relation.

flying_snow (飞雪浮冰)
Objects are ofter made up of other objects. Cars are made up of steering wheels, engines,transmissions and so forth. Each of these components may be an object in its own right. The special association of a car to its component parts is known as aggregation.

2001-3-29 -04:00

回到话题: OO. I know the relationship between Composition and Inheritance. But I can't understand clearly about Aggregation, Association, and Dependency. Would you please help me clarify them? tks.

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