A directory of Objective Type Questions covering all the Computer Science subjects.

1. A Relation is a
a. Subset of a Cartesian product of a list of attributes
b. Subset of a Cartesian product of a list of domains
c. Subset of a Cartesian product of a list of tuple
d. Subset of a Cartesian product of a list of relations
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Answer: (b).Subset of a Cartesian product of a list of domains

2. In mathematical term Table is referred as
a. Relation
b. Attribute
c. Tuple
d. Domain
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Answer: (a).Relation

3. In mathematical term Row is referred as
a. Relation
b. Attribute
c. Tuple
d. Domain
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Answer: (c).Tuple

4. _______ allow us to identify uniquely a tuple in the relation.
a. Superkey
b. Domain
c. Attribute
d. Schema
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Answer: (a).Superkey

5. Minimal Superkeys are called
a. Schema keys
b. Candidate keys
c. Domain keys
d. Attribute keys
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Answer: (b).Candidate keys

6. Who proposed the relational model?
a. Bill Gates
b. E.F. Codd
c. Herman Hollerith
d. Charles Babbage
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Answer: (b).E.F. Codd

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