Even the best-designed databases are vulnerable to failure. Hardware faults, software bugs, human error, and cyberattacks can all result in data loss. In IB Computer Science, this risk is addressed through backups and recovery. Students are expected to understand why backups are needed, how recovery works, and the trade-offs involved.
IB examiners reward explanations that clearly link backups to data protection and reliability.
Why Database Backups Are Essential
Databases store critical information such as:
- Student records
- Financial data
- User accounts
- Transaction histories
Without backups:
- Data loss may be permanent
- Systems may be unable to recover
- Organisations may suffer serious consequences
Backups provide a safety net, allowing systems to be restored after failure.
What Is a Database Backup?
A database backup is a copy of database data stored separately from the original system.
The backup can be used to:
- Restore lost or corrupted data
- Recover from system crashes
- Undo serious errors
In IB Computer Science, backups are described as preventative measures, not active security tools.
Types of Database Backups
IB students should understand the concept of different backup strategies, including:
