Home / Aptitude Tests / Computer Science / In a database, a pri...

In a database, a primary key is a field which contains?

In a database, a primary key is a field which contains?

A.

text only

B.

unique entries

C.

duplicate values

D.

numeric value only

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

See all Computer Science questions & answers
See more WAEC questions & answers
Similar Questions

Which of the following is a temporary file that can be used only once and then discarded? ...

At what stage in system development life cycle are all data documented in the form of detailed data ...

In data base, the minimum number of characters. user can input in the field is known as field? ...

If A is in cell A1 and B is in Cell B1 of a worksheet in a spreadsheet application,write a formula t...

Which of the following is true when data maintained in MS Excel workbook is linked to a word documen...

What kind of data is processed by an analog computer? ...

In word processing, an efficient way to move the second paragraph and place it after the fourth para...

Translating the problem statement into a series of sequential steps describing what the program must...

A bit as used in computing in digital communication is?  ...

The delete permission allows one to ____________ ...

Aptitude Tests

Nigeria General Knowledge Questions and Answers

Numerical Reasoning Questions and Answers

Spatial Reasoning Questions and Answers

Logical Reasoning Questions and Answers

Typing Speed and Accuracy Test

Microsoft Office Questions and Answers

Personality Test

Verbal Reasoning Questions and Answers

Data Interpretation Questions and Answers

Abstract Reasoning Questions and Answers

Situational Judgement Questions and Answers

Puzzles Questions and Answers

Quantitative Reasoning Questions and Answers

See all →