NELLEN - A FRAMEWORK FOR LITERATE DATA MODELING

The literate data modelling paradigm provides a basis for structuring, justifying, and documenting the data modelling process. The paradigm is based on deliberation schemas consisting of issues, positions, and arguments. Deliberation schemas provide both a default argumentation space for decision-taking and a structure for recording the rationale once a decision is taken. An extendable class-based implementation framework, NelleN, provides a foundation for complementing a CASE-tool data dictionary with deliberation schemas. The framework consists of algorithm, deliberation schema and deliberation triggering classes. A subclassing mechanism is used for extending the framework. A small prototype demonstrates the type of CASE-tool that may be implemented using the framework.