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

When mapping a many-to-many unary relationship into a relation which of the following is true?

A

One relation is created.

B

Two relations are created.

C

Three relations are created.

D

Four relations are created.

When mapping a ternary relationship with an associative entity into a relation which of the following is true?

A

One relation is created.

B

Two relations are created.

C

Three relations are created.

D

Four relations are created.

When mapping a multivalued attribute into a relation which of the following is true?

A

One relation is created.

B

Two relations are created.

C

Three relations are created.

D

Four relations are created.

When mapping a regular entity into a relation which of the following is true?

A

One relation is created.

B

Two relations are created.

C

Three relations are created.

D

Four relations are created.

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

A

The supertype primary key is assigned to each subtype.

B

The subtype primary key is assigned to each supertype.

C

There is no link between the supertype\/subtype entities.

D

There is no primary key\/foreign key relationship between a supertype\/subtype.

Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship?

A

MUST COVER

B

MUST NOT

C

Both of the above

D

None of the above is correct

A binary adder is a logic circuit that can add _____ binary numbers at a time.

A

Hundreds

B

Thousands

C

One

D

Two

E

None of the above

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.

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.

Which of the following is concerned with the description and mapping of the main features of the universe?

A

Cosmography

B

Cosmology

C

Geomorphology

D

None of these

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

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