支援軟體維護之 Web 資料庫軟體模型

Abstract

Web database application programs may consist of hundreds of files. The interoperations among these files could be complex, and most of them are lack of design documents. When a programmer maintains (changes) some programs of an application, the programs affected by the changes should be updated simultaneously to keep the functional consistency. One major difficulty of maintenance is to identify these affected parts, especially web database applications. In this thesis, we present a model, called HED model, for the maintenance of web database applications. HED model is composed of three diagrams, hyperlink diagrams, entity-relationship diagrams, and data-flow diagrams, where are used to represent the logic of application programs. Based on HED model, the programs files affected by a program change can be identified precisely via the structure and database analyses.