Write the fastest query to find out how many rows exist in a table?
Explain about relational operator join?
Write the difference between case version and decode version.
Given an employee table, how would you find out the second highest salary?
In which table collections errors are stored.
I HAVE A PI ON COL A THE NEXT DAY I WANT CHANGE THE PI ON COL B? PLS SEND ME THE ANS
What is DB Development software?
Explain about the database management systems.
What is the database development process?
what is difference between primary key and unique key ?
What is a join and explain different types of joins?
Who are naive users?
How can you fix a poorly performing query?