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

When mapping a binary many-to-many 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.

Who is one is not unary operation in relational algebra?

A

Select

B

Project

C

Union

D

Rename

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 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

The mapping of which of the following is most difficult ?

A

Mountains

B

Plateaus and Plains

C

Interior of the Earth

D

Oceans and their depth

In which one of the following places is the Forest Survey of India (FSI), a national organization engaged in forest cover mapping, forest inventory and training in the field of remote sensing and GIS, located?

A

Dehradun

B

Itanagar

C

Ahmedabad

D

Aizawl

Which are the special tags used for image mapping?

A

map and area

B

map and usemap

C

only map

D

only usemap

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

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