October 2008
Beginner to intermediate
680 pages
16h 48m
English
Content preview from Beginning C# 2008 Objects: From Concept to Code
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5.5. Summary
In this chapter, you learned
That an association describes a relationship between classes—that is, a potential relationship between objects of two particular types/classes.
That we define the multiplicity of an association between classes X and Y in terms of how many objects of type X can be linked to a given object of type Y, and vice versa. Possible multiplicities are one-to-one (1:1), one-to-many (1:m), and many-to-many (m:m). In all these cases, the involvement of the objects at either end of the relationship may be optional or mandatory.
That an aggregation is a special type of association that implies containment.
How to derive new classes based on existing classes through inheritance and what the do's and don'ts are when deriving ...
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