G. B. Davis

Research output: Contribution to journalArticlepeer-review

414 Scopus citations


This study identifies two major levels of requirements: the organizational information requirements reflected in a planned portfolio of applications and the detailed information requirements to be implemented in a specific application. The constraints on humans as information processors are described in order to explain why ″asking″ users for information requirements may not yield a complete, correct set. Various strategies for obtaining information requirements are explained. Examples are given of methods that fit each strategy. A contingency approach is then presented for selecting an information requirements determination strategy. The contingency approach is explained both for defining organizational information requirements and for defining specific, detailed requirements in the development of an application.

Original languageEnglish (US)
Pages (from-to)4-30
Number of pages27
JournalIBM Systems Journal
Issue number1
StatePublished - 1982

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