Menu

Question Discussion & Solution

MCQ

Q.

In SQL, which command is used to select only one copy of each set of duplicable rows

A

SELECT DISTINCT

B

SELECT UNIQUE

C

SELECT DIFFERENT

D

All of the above

E

None of the above

Community Discussion

No discussions yet. Be the first to start!

You must be logged in to participate in the discussion.

Login to Discuss

Similar Questions

MCQ

1.

Structured Query Language (SQL) is an internationally recognized standard language that is understood by all commercial database management system products.

A

True

B

False

Discussion

MCQ

2.

Which of the following is not characteristic of a relational database model?

A

tables

B

treelike structure

C

complex logical relationships

D

records

E

None of the above

Discussion

MCQ

3.

Data security threats include

A

hardware failure

B

privacy invasion

C

fraudulent manipulation of data

D

All of the above

E

None of the above

Discussion

MCQ

4.

A data dictionary is a special file that contains

A

the names of all fields in all files

B

the data types of all fields in all files

C

the widths of all fields in all files

D

All of the above

E

None of the above

Discussion

MCQ

5.

The master list of an indexed file

A

is sorted in ascending order

B

contains only a list of keys and record numbers

C

has a number assigned to each record

D

both (b) and (c)

E

None of the above

Discussion

More Computer Fundamentals Topics

Data Communication and Networking

522 MCQs

Miscellaneous or General

716 MCQs

Computer Basics

115 MCQs

Computer Softwares

58 MCQs

History and Generations

29 MCQs

CPU and its components

61 MCQs

Computer Languages

58 MCQs

Computer Hardware

336 MCQs

Input Devices

24 MCQs

Output Devices

23 MCQs

Computer Memory

132 MCQs

Digital Logic Gate

2 MCQs

Number System

37 MCQs

Computer Codes

28 MCQs

Operating System

536 MCQs

Disk Operating System (DOS)

211 MCQs

Database Systems

153 MCQs

Computer Security and Viruses

32 MCQs

Mixed

13 MCQs

Computer Awareness

115 MCQs

Files and its types

0 MCQs