The forget about the IS-A origin, in the real world a triangle is a kind of shape as well as a financial agent is a kind of person or a drug order is a kind of order. When defining entities belonging to a hierarchy I find it more natural to use inheritance instead of composition.
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The forget about the IS-A origin, in the real world a triangle is a kind of shape as well as a financial agent is a kind of person or a drug order is a kind of order. When defining entities belonging to a hierarchy I find it more natural to use inheritance instead of composition.