What is a nvl function?
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what is main def between plsql/table and array?
How to display the hierarchy of employee and managers without using connect by prior.
what is data independence exactly? give an example
22. Display the order number, number of lines in the order, total number of items and total value for all orders that have a total value greater than $100
What is clusters ?
What are the benefits of ordbms?
What is an oracle tablespace?
"primary key=unique+null" is equal,reson?not,reason?
How to view all columns in an existing table?
What are triggers?Where are they used?
Explain oracle instance.
What is a oracle database?