How do weak entities relate to id-dependent entities

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Reference no: EM131219031

a. What is an identifying relationship? How is it used?

b. Explain why the relationship between PRODUCT and VERSION discussed on page 165 is an identifying relationship.

c. What is a weak entity? How do weak entities relate to ID-dependent entities?

d. What distinguishes a weak entity from a strong entity that has a required relationship to another entity?

Reference no: EM131219031

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