Can there be 2 primary keys in a table?
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What is sql and explain its components?
i have a table t1 a math 20 b phy 30 cchemisty 10 a math 40 b phy 23 c che 21 a math15 bphy 33 c che 56 write a quire to find out the max markr of each subject
What is pseudo column ?
How do you update a value in sql?
What are the different types of a subquery?
What is sql deadlock?
Explain how procedures and functions are called in a PL/SQL block ?
Define commit, rollback and savepoint?
What is rtm in testing?
When are we going to use truncate and delete?
can i write pl/sql code in a package
while loading data into database how can u skip header and footer records in sql*loader
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