what is the difference between primary key & foreign key?
- 57 Answers
- 122269 Views
- CTS, Infosys, La Multi, Sparsh, Wipro, I also Faced
- E-Mail Answers
Answer Posted / mithun
primary key is the unique value,but its not nul values..
this kry is avoided dublicate values
foreign key is always references the primary key.
| Is This Answer Correct ? | 21 Yes | 8 No |
Post New Answer View All Answers
Database is hung. Old and new user connections alike hang on impact. What do you do? Your SYS SQLPLUS session IS able to connect.
What is the difference between hot backup and cold backup in oracle? Tell about their benefits also.
Is oracle a language?
how may join possible between (requisition with purchase order)
What is backup in Oracle?
I have a database backup file in .db (ext) form how to conver it into .dmp (ext.) for oracle database
If youre unsure in which script a sys or system-owned object is created, but you know its in a script from a specific directory, what UNIX command from that directory structure can you run to find your answer?
What is merge in oracle?
Explain oracle insert into command?
Point out the difference between user tables and data dictionary?
How to fetch the row which has the max value for a column?
Why cursor variables are easier to use than cursors?
How to assign values to data fields in record variables?
What do you understand by a database object?
what are the default admin accounts in Oracle 10g ?
