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i think you will find your answers in the world of soap and other
services oriented architectures. your description is an example of
exactly what they were invented for.
xml is the representation format, all the other web services stuff joins
the bits together. if you just go to the w3c home page ( www.w3c.org )
and follow the links there are descriptions there that match your
requirement. also the oasis home page ( http://www.oasis-open.org )
i'd be looking at (as a minimum): an xml editor, soap implementation,
reliable message transmission, and secure message transmission, and
finally some sort of data storage (xml database?) as a data sink. i
think these are the pieces you need. they're all either standards, or
nearly, and there's plenty of competition for open source and
finding products is a different problem, but knowing what you want will
make it much easier.
Stephen E. Beller wrote:
>I thank you all very much for the links.
>They don't seem to do what I need, however. Maybe I wasn't specific enough.
>I have numbers in arrays and lists that I ultimately want to render as
>graphs. These data "evolve" as they pass through a pipeline of a network of
>"nodes" -- going from computer to computer, some being manned by people and
>some run by automated software agents. Each of these nodes has a role.
>The role of some nodes is to add data to one or more of the arrays, putting
>data values in certain pre-defined positions in the arrays so, when the data
>are ultimately parsed and rendered, the graphs are properly formatted. From
>these nodes, the data may manually input, sent directly via a database
>query, extracted from another XML document, input from a sensor via an I/O
>Other nodes are responsible for evaluating/validating the data and changing
>certain data elements in the arrays and/or lists when necessary.
>Other nodes must perform computations on certain data, including data
>aggregation, statistical analysis, and other forms of data mining/analytics.
>These test results must be incorporated into the arrays in pre-determined
>positions and/or added to the lists.
>And finally the evolved arrays and lists are received by a node that must
>render them in multiple offline-interactive reports, as well as having the
>data available for ad-hoc computations/analytics.
>I want this process to be as quick and efficient as possible.
>I realize this is a tall order, and still wonder how XML can help.
>Thank you, again.
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