What is backup in Oracle?
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You have one employee table having 3 entries emp_id, Mgr_id and salary. Mgr_id is also referencing emp_id. so now find out the emp_id which are having the second highest salary, under a particular manager.
Can you use a commit statement within a database trigger?
Where is the export dump file located?
hai, when to use char and varchar2....?
How to define a record variable to store a table row?
what are corelated subqueries
Explain the different normalization forms?
Briefly explain what is literal? Give an example where it can be used?
What is the difference between the Oracle ODBC driver and a Microsoft ODBC (Open Database Connectivity) Driver?
What should be the return type for a cursor variable.Can we use a scalar data type as return type?
How to use "out" parameter properly?
Can group functions be mixed with non-group selection fields?