The ITSE system (Integrated Translation Support Environment) is a toolkit whose architecture is aimed at enabling the exchange of data between different database interoperation tools as well as the dynamic addition of new tools. Each of the tools addresses a specific set of interoperation problems and achieves interoperation using an intermediate semantic representation to map from source to target expressions.We give a brief overview of the system, the experiences that led to its specific architecture, and some scenarios in which the integrated use of tools would be beneficial.