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Backup
Definition
A copy of data stored separately for recovery purposes.
In Plain English
A backup is like a safety deposit box—a protected copy you can access if something happens to the original.
Real-World Example
Daily database backups let you restore your system if data is corrupted, deleted, or encrypted by ransomware.
Why It Matters for Your Work
Without backups, data loss is permanent. Backups are your insurance against disasters.
Common Mistake
Not testing backups. A backup you cannot restore from is worthless.
Related Terms
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Database
Organized storage for application information that can be searched and updated.