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Which of the following options is not suitable for describing weak entities a. An entity set that does not have a primary key b. An
Which of the following options is not suitable for describing weak entities a. An entity set that does not have a primary key b. An entity set that depends on the existence of an identifying entity set c. The discriminator is the set of attributes that distinguishes among all the entities of a weak entity set d. We depict a weak entity set by rectangles in ERD
Which of the following options is not suitable for design constraints of generalization? a.condition-defined b.disjoint c.total d.role
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