What is Backup?
Today, there are several ways to back up your information and mediums to keep your data. For example, CD-R, DVD-R, USB thumb drives, external drives, and in the cloud are some of the most popular places to back up your data.
Data base Backup&Restore :
A backup is a copy of data from your database that can be used to reconstruct that data.
Backups can be divided into physical backups and logical backups ;
Physical backups :
physical backups are backups of the physical files used in stroring
and recovering your database .such as data files, control files, and archiving redo logs.
Recovery :
Database recovery is the process of restoring the database to a correct (consistent) State.
In other words,it is the process of restoring the database to the most the most recent consistent before the time of system failure.
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