What is a subquery in oracle?
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1. How actually index will work ? 2. Why do people prefer mostly bitmap index and btree index in datawarehouse ? 3. If I use the column in aggrigate functions like max,min,count and avg and if I have a index created on that column, will it increases the performance ?
what is main def between plsql/table and array?
Give the Types of modules in a form?
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State all possible different index configurations a table can possibly have?
Explain table?
How to handle a single quote in oracle sql?
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What are various joins used while writing SUBQUERIES?