Download
App
Academic Resource
Aptitude
Data Interpretation
Verbal Reasoning
Non Verbal Reasoning
Verbal Ability
Programming
General Knowledge
Puzzle
Engineering
Computer Engineering
Electronics and Communication
Electrical Engineering
Mechanical Engineering
Civil Engineering
Biotechnology
Architecture & Planning
Online Test
Aptitude Test
Data Interpretation Test
Verbal Reasoning Test
Non Verbal Reasoning Test
Verbal Ability Test
Exams
More
Full Forms
हिंदी
Home
»
Computer
»
Database Concepts
» Question
Database Concepts
Easy Questions
Computer
General Introduction
Development of Computer
Computer Hardware
Computer Architecture
Input and Output Device
Memory
Presonal Computer
Design Tools and Programming Langguages
Programming Concepts
Data Representation and Number System
Software
Operating System(OS)
Database Concepts
Data Communication
Internet
Computer Security
Microsoft Windows
Microsoft Office
Miscellaneous
Which of the following types of table constraints will prevent the entry of duplicate rows ?
Primary key
Unique
Null
Foreign key
None of these
Correct Option:
A
NA
Previous Question
Next Question
Your comments will be displayed only after manual approval.
Post your Comment
