what is meant by : FULL BACKUP, DIFFERENTIAL BACKUP , INCREMENTAL BACKUP?

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  • NC
    Lv 7
    1 decade ago
    Favorite Answer

    Full backup copies all files from source location to the backup location.

    Differential backup only copies files that have changed since the last full backup.

    Incremental backup only copies files that have changed since the last backup, regardless of whether it was a full, differential, or incremental backup.

  • Lew
    Lv 7
    1 decade ago

    Full Backup/Archival Backup - Complete/Full backup of every selected file on the system regardless of whether it has been backup recently.. This is the slowest of the backup methods since it backups all the data. It’s however the fastest for restoring data.

    Incremental Backup - Any backup in which only the files that have been modified since last full back up are backed up. The archive attribute should be updated while backing up only modified files, which indicates that the file has been backed up. This is the fastest of the backup methods, but the slowest of the restore methods.

    Differential Backup - The backup of all data files that have been modified since the last incremental backup or archival/full backup. Uses the archive bit to determine what files have changed since last incremental backup or full backup. The files grows each day until the next full backup is performed clearing the archive attributes. This enables the user to restore all files changed since the last full backup in one pass. This is a more neutral method of backing up data since it’s not faster nor slower than the other two

  • 4 years ago

    an incremental backup is a backup that reflects a in many cases happening era - ie: hourly, on a regular basis, weekly, etc. a differential backup is a backup of those issues that are distinctive from the final backup. I have not have been given any concept what "resetting the archive bit" skill. stable success with that one.

  • Anonymous
    1 decade ago

    Everything you ever wanted to know about databases, but were afraid to ask....

    Informix is the second best RDBMS ever released commercially (Oracle comes third)

    see "sources", below.

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  • 1 decade ago

    Again GOOGLE it you will get all the info you need

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