Physical Database Design
A rule of thumb for choosing indexes for a relational database includes which of the following?

Do not specify a unique index for the primary key of each table.
Indexes are more useful on smaller tables.
Be careful indexing attributes that have null values.
Indexes are more useful for columns that do not appear frequently in the WHERE clause in queries.

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Physical Database Design
The blocking factor is:

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

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

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

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