Insight into GML
Kiran Kumar Doddapaneni, Shikha Trivedi-INTERGRAPH CONSULTING PVT. LTD (SUBSIDIARY INTERGRAPH CORPORATION)
The TRUE representation of the geo-spatial data is always the key requirement of the GIS user communities. GML serves the purpose, it is flexible, powerful and a complete model for depicting real world objects and its phenomenon. GML inherits its strength from the standard XML technologies and has its own strengths by utilizing them smartly for its intended purpose. The GML specification defines the XML schema, mechanisms, and conventions that provide an open, vendor-neutral framework for the definition of geospatial application schemas and objects
Intergraph played an active role in supporting this multifaceted data model. This paper shares Intergraph's experiences in seamless integration of GML into the Intergraph's core GeoMedia® software using the unique data server and export technology.
The main focus of the paper is to discuss how incisively the Intergraph GML implementation supports the GML concepts viz, Hierarchical model, Complex elements Vs Simple elements, Geospatial application schemas for specialized domains and information communities, Extensible data types, Multiple namespaces, Rich set of geometries which can be an application/user defined or a standard GML defined, Instance level SRS information, and explicit storage of NULL values.
We also discuss briefly our future endeavor of GML implementation.