When mapping entities containing supertypes and subtypes a _________ table implementation is used when most of the attributes and relationships are shared at the supertype level?
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Answer: A single table implementation model is used when mapping the entities containing supertype and subtype.
This implementation is used when a common relationship and attributes are shared by supertype and subtype.
Whereas there are other implementations used; when attributes are to be present separatelt, like arc implementation which includes a different table for each attribute of supertype and subtype.
Explanation:
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