A model for a generalized data access method

Authors:
Randall L. Frank;Koichi Yamaguchi
Affiliations:
The University of Utah, Salt Lake City, Utah;The University of Michigan, Ann Arbor, Michigan
Venue:
AFIPS '74 Proceedings of the May 6-10, 1974, national computer conference and exposition
Year:
1974

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Abstract

The proliferation of the methods used in modern operating systems to access data is apparent. In the operating system OS/360 alone there exist multiple ways of accessing sequential data (BSAM, QSAM, BPAM), indexed sequential data (BISAM, QISAM) and directly addressable data (BDAM). If one adds to this the variations of the above used by various systems that run under the control of OS/360, such as IBM's data base management system IMS/360, there exists almost a countless number of ways to access and store data within a computer system.