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subtype
(redirected from Supertype)

    Also found in: Wikipedia 0.02 sec.
(programming)subtype - If S is a subtype of T then an expression of type S may be used anywhere that one of type T can and an implicit type conversion will be applied to convert it to type T.

In object oriented programming, this means that objects of type S must accept every message that one of type T would.


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Subtyping is necessary when clarity is required about the data (and to some respect, the behavior) of the Supertype entity.
Salvaging Information Engineering Techniques In A Data Warehouse ... by Politano, Anthony L. / Computer Technology Review
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