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Two types of whole-part hierarchies are the is-a hierarchy and the has-a hierarchy. The is-a hierarchy represents relationships where a subclass is a specific type of a superclass, such as a "Dog" being a type of "Animal." In contrast, the has-a hierarchy indicates ownership or composition, where an object contains other objects, like a "Car" having "Wheels." These hierarchies are commonly used in object-oriented programming and data modeling to structure relationships within systems.

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