Management of Web Data Models Based on Graph Transformation

Abstract * Based on the Reserved Graph Grammar (RGG), this paper presents a unified framework to manage model-based information on the Web in a hierarchical structure. The framework allows models, schemas, and data instances to be represented explicitly and uniformly. The uniform representation of the framework also enables simple user-defined graph transformation rules for different Web data models to translate schemas and data instances between different formats. In addition, the framework implements a set of prototype tools for users to identify meta-primitives at the meta-model level, to define a model or schema by specifying a set of graph grammar rules and to draw the structure of data instances. These features promote a wide scope of Web-related applications, such as information exchange between different organizations, and integration of data coming from heterogeneous information sources. 1