Physical Database Design
Which of the following are integrity controls that a DBMS may support?

Limit the use of null values in some fields.
Limit the set of permissible values that a field may assume.
All of these
Assume a default value in a field unless a user enters a value for that field.

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Physical Database Design
The blocking factor is:

attributes grouped together by the same secondary key.
the number of physical records per page.
attributes grouped together by the same primary key.
a group of fields stored in adjacent memory.

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Physical Database Design
If a denormalization situation exists with a many-to-many or associative binary relationship, which of the following is true?

All fields are stored in three relations.
All fields are stored in one relation.
All fields are stored in four relations.
All fields are stored in two relations.

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