Logical Database Design
When mapping a binary many-to-many relationship into a relation which of the following is true?

One relation is created.
Two relations are created.
Three relations are created.
Four relations are created.

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Logical Database Design
When mapping a supertype/subtype relationship which of the following is true?

There is no link between the supertype/subtype entities.
There is no primary key/foreign key relationship between a supertype/subtype.
The supertype primary key is assigned to each subtype.
The subtype primary key is assigned to each supertype.

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