o aid the software and database developer in the development process, specialised software is needed, known as CASE-tools. To form a productive work environment, multiple CASE-tools should be able to cooperate with each other, as it is likely that a single tool cannot give full support for the whole development process. An aid in the integration of tools is that information is stored in a central repository, available for any tool that needs it. A problem which arises is that not all tools are capable of directly accesing the contents of the repository. Thus export procedures are needed that transforms the repository contents into a format that an external tool can read and understand. If these transformation procedures are specified directly in the implementation language, modification can be difficult or even impossible.
This work proposes a general transformation model for storing rules in a repository. These rules operate on the information in a source model and transform it to a textual representation ready for export to external tools. An example ruleset is given that transforms an example relational model into SQL code.