What is a sub query? What are its various types?
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Which is better Oracle or MS SQL? Why?
What are named parameters?
Explain parameter file in oracle.
What is OCI. What are its uses?
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.
What are the logical operations?
Is the After report trigger fired if the report execution fails ?
What is a nested table and how is it different from a normal table?
What does sharding mean?
If I have a select statment which retrives 2 rows, & that rows have the same data in all the fields except the last field and I want to merge the 2 rows to be in 1 row with concatenating the last field which have the different data.... eg: the 1st row has these fields: A-B-C the second row has: A-B-X ........ i want to merge the two row to be in one row like ----> A- B- C,X
What is an oracle user account?
12 RULES OF RDBMS