Reusing Analysis Schemas in ODB Applications: a Chart Based Approach

This paper presents a method for creating, indexing and reusing analysis schemas in developing Object- oriented Data-base (ODB) applications. Analysis schemas are specified by using analysis charts , a user- oriented set of forms structured according to the TQL ++ Object-oriented specification model, and are classified according to their structural characteristics and content. A set of analysis charts forms a reusable schema, referred to as an analysis stack . The developer can retrieve and examine stacks by accessing analysis charts containing relevant entity names and structures. Charts are connected by links reproducing TQL ++ relationships and connecting ‘similar’ schemas. The paper presents the measures of similarity between charts and describes the organization of charts in a reuse repository . A Thesaurus of relevant terms and synonyms is coupled with the repository. The Thesaurus and the repository are the basis for guiding developers in deriving new ODB applications through a sequence of steps proposed by a CHarting and Analysis for Reuse Tool (CHART) . The methodology for reusing analysis schemas, based on navigation in the repository, and the support tool are described.