Model Description Language NUMDL is an important part of JSEIDSS which is an intelligent decision support system. NUMDL provides a tool for model building and model management.

I'll start with a general description of the decisions any language designer must consider within a typing model, focusing on the controversial decision of static versus dynamic typing.

The ESB model promotes SOA-based integration with service contracts and metadata associated with the service contracts, such as Web Services Description Language (WSDL), schema, or policy.