What is the difference between truncate & delete command?
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How will you differentiate between varchar & varchar2?
Please explain the difference between outer join and inner join? With examples would be appreciable..!
Why we choose emp number as primarykey?
What would you do if a database crashes in production?
How to load data through external tables?
how to convert .db (extention) database file into .dmp (extention ) for oracle database ?
Can you create a synonym without having a table?
What is not equal to in oracle?
What is a Synonym ?
Explain the use of online redo log files in oracle.
i want to know about mr.b.kotravel......who has answered for second maxmium salary from employee table
Is there any function in oracle similar like group_concat of mysql?