Basic Mechanisms
Several techniques preserve the integrity of the data
- Error detection/correction in the hardware
- Passwords and authentication assist in verifying that the person(s) making changes are legitimate
- Validation … verify that changes to the DB are “plausible”
- “Commitment” … keep record in a safe place of all changes to the database, and then when it has been verified, make the actual change effective; deletions never actually result in the data being removed
Backup copies of a DB must be made regularly, and kept off-site
Do you back up your information?