Data persistence refers to the characteristic of stored data that survives beyond the lifetime of the process or power cycle that created it. By writing to non-volatile storage, the data remains available and intact after reboots, crashes, or power outages, until someone intentionally modifies or deletes it. This durability is essential to a database's role as long-term information storage, whereas factors such as speed, concurrency, or data variety are addressed by other database features.
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CompTIA ITF+ FC0-U61 (V5)
Database Fundamentals
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