From Overview of Gateway Project DoD MetaSystems Workshop Charlottesville Va. -- August 11-13 99. byGeoffrey C. Fox, Bill asbury, Ken Flurchick, Tom Haupt
Third file format is
prescribed: data is encoded in some defined fashion known to more than one Gateway application/service
Here HDF XML HTML are examples
other file characteristics include database generated, realtime ...
Gateway modules need to specify nature of their input and output files and what type of linkage of modules is allowed or even required.
E.g. scientific notepad may allow data to be imported from the visualization service or require that it be encoded in ScienceML