Where can I learn sql for free?
sales persons should always receive commission of 100 at least. employees who r not sales persons should never receive commission.(Triggers)
What is the current version of postgresql?
Which is faster joins or subqueries?
How to get list of all tables from a database?
Why is a primary key important?
how to insert the data through views? The view is depending upon more than two tables? how to update materalized views?
What is schema in sql?
Can procedure in package be overloaded?
What are all types of user defined functions?
How to fetch the rows by dynamicaly passing table name through cursor?
how to get help information from the server? : Sql dba
Explain how exception handling is done in advance pl/sql?