Wipro PLSQL Interview Questions

Wipro PLSQL Interview Questions

1. Difference between truncate and delete.
2. write a query to find second max salary.
3. write a query to delete duplicate rows.
4. difference between procedure and function.
5. what is package.how to call the function.
6. how to delete recently created 10 days files.
7. how du you know which process is running in u r system.