The three newest database architectures in use today are relational, multidimensional and hierarchical.

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

A. All fields are stored in one relation.

B. All fields are stored in two relations.

C. All fields are stored in three relations.

D. All fields are stored in four relations.

Selecting a data type involves which of the following?

A. Maximize storage space

B. Represent most values

C. Improve data integrity

D. All of the above.

What is the best data type definition for Oracle when a field is alphanumeric and has a length that can vary?

A. VARCHAR2

B. CHAR

C. LONG

D. NUMBER

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

A. All fields are stored in one relation.

B. All fields are stored in two relations.

C. All fields are stored in three relations.

D. All fields are stored in four relations.