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Service Interface Specifications
DGIWG reviews existing international specifications, in particular
those from ISO and OGC, and determines their suitability for use
by the military community. Usually, there are three courses of action:
- Endorse the specification as-is, meaning that the specification
can be implemented without profiling. DGIWG may choose to create
additional documentation that will guide implementation of the
specification.
- Profile the specification, meaning that the specification is
not suitable as-is for implementation and requires profiling to
a level where it can be implemented. This situation occurs when
a) the specification needs to be varied or extended to meet the
unique requirements of the military community, b) the specification
is too abstract and needs to be made more concrete so that implementations
are consistent, or c) the specification has ambiguities that need
to be corrected so that there is a common understanding across
the community.
- Create a new specification because no existing specification
is available.
At this time, there are two service interface specifications available
through DGIWG:
- Request
For Information (RFI) Service Draft Standard. A
Request for Information (RFI) is a fundamental service
offered by military intelligence agencies to provide timely
and relevant information to commanders and warfighters
in response to their unique information requirements that
often cannot be readily fulfilled from local sources of
information. The objective of the RFI Service specification
is to define the interfaces between RFI systems so that
RFIs can be exchanged and processed between agencies in
a military coalition environment. This specification applies
to all types of information requests and is not specific
to geospatial information requests.
- DGIWG Catalogue Service for the Web (CSW)
Profile Draft Standard.
This profile provides the service interface specification that
catalogue systems can implement thereby enabling a federation
of systems to exchange information (metadata) about geospatial
resources (dataset, applications and services) . Based on the
OGC CSW specification, the DGIWG profile is more concrete,
eliminating ambiguities, provides traceability to operational
requirements and detailed guidance for implementation. The
document exists in two parts:
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