When data items are stored in a computer system, they can be stored for varying periods of time—temporarily or permanently.
Files exist on permanent storage devices, such as hard disks, Zip disks, USB drives, reels or cassettes of magnetic tape, and compact discs .Computer files are the electronic equivalent of paper files often stored in file cabinets in offices.
When you work with stored files in an application, you typically perform all or some of the following tasks:
- Determining whether and where a file exists
- Opening a file
- Reading data from a file
- Writing information to a file
- Closing a file
For more information about File
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