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| Access Methods. |
File Access Methods: at To use the information stored in a file it must be accessed, and read into computer memory, the two commonly supported file, access methods at operating system level are sequential and random access they are briefly described below. sequential access files are normally used with sequential access storage medium, such at magnetic tape, information, stored in a sequential access file, can be accessed only sequentially that is a process, can read the bytes or records, in the file in the order in which they are stored starting at the beginning reading of bytes, or records randomly or out of the orders is not possible, at sequ3ential file can however, be rewound and read as often as needed.