What is sql*loader and what is it used for? : aql loader
Define select, insert, create, delete, update, drop keywords
what is sub-query? : Transact sql
Explain spool.
How do you write an index?
What does varchar include?
How are functions and procedures called in PL/SQL?
how to create a new table in mysql? : Sql dba
What is a table partition?
How can I tell if sql is running?
What is the difference between sql and mysql?
Which constraints we can use while creating database in sql?
What is left join in postgresql?
What is restrict in sql?
Define union, minus, union all, intersect ?