Table of Contents
COMPUTER AWARENESS MCQ FOR COMPETITIVE EXAMS
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21.In a database, a column in the table is also called _______
a) Attribute
b) Relation
c) Key
d) Tuple
ANSWER:A
22.In the E-R Diagram, what does the diamond symbol represent?
a) Link between attributes and entity set
b) Attribute
c) Relation between entity set
d) Entity
ANSWER:C
23.Which term is referred as a blueprint of how the database is constructed?
a) Cardinality
b) Primary Key
c) Schema
d) Tuple
ANSWER:C
24.The properly arranged data is called ___
a) Words
b) Sentence
c) Knowledge
d) Information
ANSWER:D
25.Which language can be used by a user to request for the information from a database?
a) Query
b) Relational
c) Compiler
d) None of these
ANSWER:A
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26.Which of the following is not the type of data model in database?
a) Hierarchical
b) Transition
c) Relational
d) Network
ANSWER:B
27.For each attribute of a relation, there is a set of permitted values called?
a) Entity
b) Schema
c) Relation
d) Domain
ANSWER:D
28.In database “Tuple” is referred to?
a) Row
b) Column
c) Table
d) Field
ANSWER:A
29.Which of the following process in DBMS helps to reduce data redundancy in database?
a) Normalization
b) Relational Table
c) Relational Algebra
d) E-R Diagram
ANSWER:A
30.Which among the following option does DBMS helps to achieve?
a) Centralized manner to control data
b) Data independence
c) More redundancy
d) both (a) and (b)
ANSWER:D
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Q31. In MS-DOS 6.22, which part identifies that product uniquely? (a) MS
(b) DOS
(c) Ms – DOS
(d) 6.22
(e) None of these
ANSWER:D
Q32. Who is the father of computers?
(a) Ada Byron
(b) Charles Babbage
(c) Blaise Pascal
(d) Herman Hollerith
(e) None of these
ANSWER:B
Q33. Who is the chief of Microsoft?
(a) Babbage
(b) Bill Gates
(c) Bill Clinton
(d) Bush
(e) None of these
ANSWER:B
Q34. An electronic device, operating under the control of instruction that can accept and process the data, produce output and store the results for future use is called _________.
(a) Input
(b) Computer
(c) Software
(d) Hardware
(e) None of these
ANSWER:B
Q35. Computer gathers data, which means that they allow users to __________ data.
(a) Present
(b) Input
(c) Output
(d) Delete
(e) None of these
ANSWER:B
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Q36. The smallest unit of information, a computer can understand and process is known as ________.
(a) Digit
(b) Byte
(c) Megabyte
(d) Bit
(e) Hertz
ANSWER:D
Q37. Which of the following is not a type of database?
(a) Hierarchical
(b) Relational
(c) Network
(d) Transition
(e) None of the above
ANSWER:D
Q38. Which among the following is an organised collection of data about a single entity?
(a) file
(b) excel
(c) dictionary
(d) library
(e) None of these
ANSWER:E
Q39. Which of the following is not a DBMS software?
(a) dBase
(b) FoxPro
(c) Oracle
(d) Sybase
(e) Database2000
ANSWER:E
Q40. DBMS helps to achieve:
(a) data independence
(b) more redundancy
(c) centralized manner to control of data
(d) Both (a) and (c)
(e) None of the above
ANSWER:D
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