Interested to Buy Any Domain ? << Click Here >> for more details...
Can A column defined as PRIMARY KEY can have NULL values ?
- 2 Answers
- 4836 Views
- I also Faced
- E-Mail Answers
Answer Posted / 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 View All Answers
What are the Roles and responsibilities of database administrator?
Why is group-clause used?
Mention the differences between union and union all
How big is google's database?
What is the data in a database?
Define fragmentation.
State three differences between Dbms and Rdbms?
What do you understand by aggregation and atomicity?
What is database management used for?
Can I use google sheets as a database?
What are different type of normalization?
Can I concurrently access a firebird database with embedded and with regular server?
What do you mean by buffer manager?
Explain meant by 3-tier architecture?
Why does reading require write privileges on database file?
