Supporting system maintenance with automatic decomposition schemes

Abstract
Automatic decomposition schemes at the procedural implementation level can be useful in all three phases of system maintenance, namely comprehension, testing, and debugging. A software system-comprising multiple functional, data storage, and control modules-can be decomposed along the three dimensions of partition, abstraction, and projection. Dependence relations have been used for automatic program decompositions at a single-module level. Dependence relations, defined for multiple module data-driven systems, are used in generating system-level projections. This is accomplished by visualizing a multimodule system as a structured program implemented in a system description language. The data storage modules are represented as variables, the functional modules (implemented in a procedural language) are represented as generalized assignment statements, and control modules are represented as control flow primitives.<>

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