Qualcomm Oracle Quiz-1

For schemas derived from strong entity sets, the primary key of the entity set serves as the primary key of the resulting schema. This is because the primary keys are to be preserved as they are unique.

The primary key of the representation of a weak entity set consists of the primary key of the strong entity set and the discriminator of the weak entity set.

For a binary many to many relationship, the union of the primary keys of the participating entity sets becomes the prime attribute.

For a binary many to many relationship, the union of the primary keys of the participating entity sets becomes the prime attribute.

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