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Raspberry Raspberry
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Posts: 3294
7 years ago
The ________ specifies that each entity instance of the supertype must be a member of some subtype in the relationship.
Textbook 
Modern Database Management

Modern Database Management


Edition: 12th
Authors:
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dorkalotdorkalot
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Posts: 3288
7 years ago
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Raspberry Author
wrote...
7 years ago
Thank you so much for this Upwards Arrow
wrote...
7 years ago
I'll stick around a little while if you need more of an explanation, otherwise thanks for marking the topic solved
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