Persistence (computer science)
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High Quality Content by WIKIPEDIA articles! Persistence in computer science refers to the characteristic of data that outlives the execution of the program that created it. Without this capability, data would only exist in RAM, and would be lost when this RAM loses power, such as on computer shutdown. This is achieved in practice by storing the data in non-volatile storage such as a hard drive or flash memory. Image editing programs or word processors, for example, achieve data persistence by saving their documents to files to avoid data loss in the event of power failures.

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High Quality Content by WIKIPEDIA articles! Persistence in computer science refers to the characteristic of data that outlives the execution of the program that created it. Without this capability, data would only exist in RAM, and would be lost when this RAM loses power, such as on computer shutdown. This is achieved in practice by storing the data in non-volatile storage such as a hard drive or flash memory. Image editing programs or word processors, for example, achieve data persistence by saving their documents to files to avoid data loss in the event of power failures.