How is RMAN backup different than the other conventional methods of backup

Hello to all,
I have a question if somebody can please answer my queries
How & Why is RMAN backup different than the other conventional methods of backup.
What is different in the way a database is backed up using RMAN.
I am very well aware of the capabilites of RMAN to recover from a loss , but I did like to know as to how RMAN makes it possible to go about it.
Please answer
Altaf

You can start with the reading of the Oracle docs:
Backup and Recovery Basics
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14192/toc.htm
Backup and Recovery Quick Start Guide
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14193/toc.htm
Backup and Recovery Reference
http://download.oracle.com/docs/cd/B19306_01/backup.102/b14194/toc.htm

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