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

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

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

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

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