A METHODOLOGY FOR COMPARISON OF GENERALIZED DATA MANAGEMENT SYSTEMS: PEGS (PARAMETRIC EVALUATION OF GENERALIZED SYSTEMS)
Final rept. Mar-Nov 1966
INFORMATICS INC SHERMAN OAKS CA
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The objective of this research study contract was to develop a practical technique evaluating generalized data management systems. This report describes the technique that was developed for the quantitative evaluation of the relative effectiveness of large on-line generalized data management systems. Parametric Evaluation of Generalized Systems PEGS is a procedure based on analysis of user-oriented system parameters. The utility of a system is measured in terms of its usefulness in a particular application environment. The over- all effectiveness of the system is evaluated, rather than any individual hardware or software component. A large number of system parameters is described. Each parameter is a value attribute of a data management system, with respect to its capability, its ease of use, or its performance. Techniques are specified for measuring the utility of a system to the user in terms of each parameter. These measurements of individual parameter utility are expressed as ratings based on a standard scale. Each rating is weighed by a measure of its relative importance in a particular application. Finally, a single numeric figure-of-merit is computed for each generalized data management system evaluated.
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