Abstract
The Canadian Geospatial Data Infrastructure (CGDI) is a distributed set of data, as well as services and applications that enable the sharing and use of geospatially referenced information. The CGDI is being developed by the Geoconnections program. A complete introduction to the CGDI and its various aspects is found in the CGDI Target Vision. CGDI is an open information technology infrastructure that is based upon publicly available specifications. The architecture is designed to enable the implementation of systems to support service providers, data providers and application developers, using interoperable and re-usable components. This goal is achieved largely through specifying the interfaces of these services. These specifications draw upon the International Organization for Standardization (ISO) 19100 series of abstract standards for Geographic Information, and related implementation specifications under development by the Open GIS Consortium (OGC). This architecture description document is one of a trio of evolving documents that describe the CGDI: 1. The CGDI Target Vision, 2. The CGDI Architecture Description, and 3. The CGDI Implementation Plan.
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