What are the backup and recovery strategies in DB2?

In DB2, backup and recovery strategies are essential mechanisms for protecting the database, ensuring quick data recovery in case of data loss or damage.

Backup strategies include full backup, incremental backup, and differential backup. A full backup is a backup of the entire database, an incremental backup only backs up data that has changed since the last backup, and a differential backup only backs up data that has changed since the last full backup. These backup strategies ensure that data in the database can be effectively backed up at different points in time.

Recovery strategies include database recovery and log recovery. Database recovery involves restoring backup data to a normal state when a database failure occurs, while log recovery restores the database to its state before the failure by replaying transaction logs. These recovery strategies ensure that the database can quickly resume normal operation when a failure occurs.

In conclusion, backup and recovery strategies are very important in DB2, as they can effectively protect data security and reliability. Implementing appropriate backup and recovery strategies can reduce the risk of data loss and ensure the stable operation of the database system.