REML is an intermediate expression without concerning
the original sources’ format, code, indexing and son on. All
information offered by IIS are expressed in REML, they can be
accessed by any requestor and easily be integrated into other
information
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The name of sub-element in element is free, usually is
taken from the identifier within information source, such as
field name of relational database, sensor name, file name etc
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IIS offers information in REML, so one can freely integrate
information coming from several IIS, only given its descriptor
telling integrator how to do it
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IIDL, a XML-based language, is used to describe the
information sources and combine rules for all information
offered by IIS; regardless of it is single information or
integrated information. An IIDL document is a container of the
meta-information about original sources and rules to combine
different sources into uniform target information. A simple
IIDL document may be like as follow