Can A column defined as PRIMARY KEY can have NULL values ?

Question Posted / guest

2 Answers
4938 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Can A column defined as PRIMARY KEY can have NULL values ?..

Answer / guest

FALSE

Is This Answer Correct ?

8 Yes

1 No

Can A column defined as PRIMARY KEY can have NULL values ?..

Answer / parul chaudhary

No,a coloum defined as PRIMARY KEY can't have NULL values,
because when we assign a coloum as a PRIMARY KEY that mean
its a unique coloum by which whole the table have to be
accessed.

Is This Answer Correct ?

5 Yes

0 No

Post New Answer

More Database Management Interview Questions

1)what is the difference between view and materilized view? 2)what is the difference between delete and truncate? 3)what is the difference between migration and upgration? 4)what is the difference between RMAN HOT BACKUP and normal hot backup?

2 Answers 3i Infotech,

What is database example?

0 Answers

What are five types of database models?

0 Answers

What do you mean by fill factor concept with respect to indexes?

0 Answers

What will the SHOW_ALERT function returns ?

3 Answers College School Exams Tests, DSS,

What is dbms and types of dbms?

0 Answers

Explain the Logical Schema of Database