what is the difference between rollback & commit?
can a foreign key has null value?
- 6 Answers
- 13272 Views
- I also Faced
- E-Mail Answers
Answer Posted / ven
Commit made changes permenant to the database.
Rollback made undo the changes.
Yes, FK has null values.
| Is This Answer Correct ? | 23 Yes | 2 No |
Post New Answer View All Answers
How to define an external table with a text file?
what are the default admin accounts in Oracle 10g ?
What are the ways tablespaces can be managed and how do they differ?
State and explain about oracle instance?
How to define an oracle cursor variable?
How to assign data of the deleted row to variables?
how can we store any pdf file in oracle
Why does oracle 9i treat an empty string as null?
Describe the types of sub query?
What is the oracle implicit cursor?
how to handle exceptions in post production
What is a view and how is it different from a table?
What is oracle open database communication (odbc)?
Define the SGA and: How you would configure SGA for a mid-sized OLTP environment? What is involved in tuning the SGA?
What is recovery manager in Oracle?
