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Indexed Sequential Access Definition and Explanation PDF Download

Learn Indexed Sequential Access definition in operating system with explanation to study “What is Indexed Sequential Access”. Study indexed sequential access explanation with operating system terms to review operating system course for online degree programs.

Indexed Sequential Access Definition:

  • Pertaining to the organization and accessing of the records of a storage structure through an index of keys that are stored in arbitrarily partitioned sequential files.

    Operating Systems by William Stallings



Indexed Sequential Access Explanation:

Indexed Sequential Access is a method that modifies the direct access method. Basically it combines both, the direct and sequential method. In this method, the index is nothing but a pointer to the memory block. The direct access is used to access a record in a file. The main advantage of this method is that both direct and sequential access of files is possible.

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