Hatley–Pirbhai modeling

Hatley–Pirbhai modeling is a system modeling technique based on the input–process–output model (IPO model), which extends the IPO model by adding user interface processing and maintenance and self-testing processing.^[1]

Overview

The five components—inputs, outputs, user interface, maintenance, and processing—are added to a system model template to allow for modeling of the system which allows for proper assignment to the processing regions.^[1] This modeling technique allows for creation of a hierarchy of detail of which the top level of this hierarchy should consist of a context diagram.^[1] The context diagram serves the purpose of "establish[ing] the information boundary between the system being implemented and the environment in which the system is to operate."^[1] Further refinement of the context diagram requires analysis of the system designated by the shaded rectangle through the development of a system functional flow block diagram.^[1] The flows within the model represent material, energy, data, or information.^[2]

References

^ ^a ^b ^c ^d ^e Pressman, Roger S. (2005) [1982]. Software Engineering - A Practitioner's Approach (6th ed.). New York, NY: McGraw-Hill. p. 133. ISBN 0-07-285318-2.
^ Hatley, Derek J.; Hruschka, Peter; Pirbhai, Imtiaz (2000) [2000]. Process for System Architecture and Requirements Engineering. New York, NY: Dorset House Publishing. p. 434. ISBN 0-932633-41-2.

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[pressman132-1] Pressman, Roger S. (2005) [1982]. Software Engineering - A Practitioner's Approach (6th ed.). New York, NY: McGraw-Hill. p. 133. ISBN 0-07-285318-2.

[Hatley/Pirbhai-2] Hatley, Derek J.; Hruschka, Peter; Pirbhai, Imtiaz (2000) [2000]. Process for System Architecture and Requirements Engineering. New York, NY: Dorset House Publishing. p. 434. ISBN 0-932633-41-2.

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