Say I have entity A with primary key "key_A" and entity B with primary key "key_B”. I also have that key_A is a foreign key in entity B. My business rules state that every instance of A is related to at least 1 instance of B, and every instance of B is related to exactly 1 instance of A. In a situation like this, how would you classify A and B as weak/strong entities?

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    What do you think? What are the definitions of weak and strong, and how do they apply here? Jun 1 at 10:04

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