Cartesian product

Difference

Intersection

Product

Groups

Table

Attributes

Switchboards

Ordering of rows is immaterial

No two rows are identical

(A) and (B) both are true

None of these

Stringent real-time requirements

Multiple users wish to access the data

Complex relationships among data

All of the above.

Dependent on hardware

Dependent on software.

Dependent on both hardware and software

Independent of both hardware and software