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Which of the following types of table constraints will prevent the entry of duplicate rows?

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+1 vote
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in Computer by (46.3k points)

Which of the following types of table constraints will prevent the entry of duplicate rows? 

a) Unique 

b) Distinct 

c) Primary Key 

d) NULL

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3 Answers

+2 votes
by (49.3k points)

Answer is:

(c) Primary Key

+1 vote
by (30 points)
A- Unique key and C- Primary key
+1 vote
by (25 points)
C. primary key
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