Why might a DBA choose incremental backups for large databases?

• A. To minimize the backup space required
• B. Because they are the most secure method
• C. To optimize backup time
• D. Because they include all historical data

Answer: (C)

Choosing incremental backups for large databases is primarily motivated by the need to optimize backup time. Incremental backups function by only capturing the changes made since the last backup, which significantly reduces the volume of data being processed compared to full backups that require backing up all data every time. This time-saving approach allows DBAs to perform backups more frequently, minimizing potential data loss and enhancing recovery processes while ensuring that system resources are used more efficiently.

In addition to optimizing backup time, incremental backups also typically require less storage space compared to full backups. However, the main benefit in this context is how they streamline the backup process itself, allowing for quicker completion and less impact on system performance during backup windows.