Data Management

DDMS Overview


Basic Elements

Data Objects


User Applications

Manipulating Data


Further Info

Data Management

Detailed Information About the JGOFS Distributed Database Management System (DDMS)

Translators / methods

The “translators” (or “methods” in object-based terminology) are programs which give other PI's a viewport into a data set. The program both makes the data set visible to the outside world and shields outside users from needing to know the details of where and how the data is stored.

These programs are responsible for
  • receiving requests for subselections of the data
  • gathering the requested information from the data set
  • translating the information into the internal form used for transferring data
  • sending the information through the communication line to the process which made the request.
One translator may serve several different data sets -- the translators depend on the format chosen by the PI, but generally not on the information itself, though there can be exceptions.



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