Interested to Buy Any Domain ? << Click Here >> for more details...
"primary key=unique+null" is equal,reson?not,reason?
- 5 Answers
- 7476 Views
- I also Faced
- E-Mail Answers
Answer Posted / prashant
Primary Key = unique + Not null
Because primary key is used to uniquely identify each row
of the table.
| Is This Answer Correct ? | 9 Yes | 0 No |
Post New Answer View All Answers
What is meant by joins?
what is the difference between restoring and recovering?
How do you increase the OS limitation for open files (LINUX and/or Solaris)?
How oracle handles dead locks?
query optmization techniques and quwry analyser+projects+ppts
How do I decide when to use right joins/left joins or inner joins or how to determine which table is on which side?
How do we represent comments in oracle?
How do I spool in oracle?
What is PL/SQL ?
What are the differences between interval year to month and interval day to second?
Explain about integrity constraint?
What do you understand by database schema and what does it hold?
How to establish administrator authentication to the server?
How to rename an index in oracle?
What is proxy method?
