EPSG codes are numeric codes associated with coordinate system definitions. For instance, EPSG:4326 is geographic WGS84, and EPSG:32611 is “UTM zone 11 North, WGS84”. The WMS protocol uses EPSG codes to describe coordinate systems. EPSG codes are published by the OGP Surveying and Positioning Committee. A list of PROJ.4 definitions corresponding to the EPSG codes can be found in the file /usr/local/share/proj/epsg. PROJECTION describes how to use these in your Mapfile.
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http://spatialreference.org for a listing of spatial references and an interface to search for spatial references.
Filter Encoding is an OGC standard which defines an XML encoding for filter expressions to allow for spatial and attribute querying.
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Geography Markup Language is an OGC standard which defines an abstract model for geographic features
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The Open Geospatial Consortium is a standards organization body in the GIS domain. MapServer supports numerous OGC standards.
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WMS Server and WMS Time and WMS Client and WFS Server and WFS Client and WCS Server and Map Context and SLD and WFS Filter Encoding and SOS Server
OGR is the vector data access portion of the GDAL library. It provides access to a multitude of data formats.
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Observations and Measurements is an OGC standard which defines an abstract model for sensor based data.
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Shapefiles are simple GIS vector files containing points, lines or areas. The format was designed and published by ESRI and is widely supported in the GIS world. It is effectively the native and highest performance format for MapServer.
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SLD is an OGC standard which allows for custom symbolization for portrayal of data.
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SOS is an OGC standard which provides an API for managing deployed sensors and retrieving sensor and observation data.
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Scalable Vector Graphics is an XML format that MapServer can output. It is frequently used in browser and mobile devices.
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Shockwave Flash format that MapServer can generate for output.
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A tileindex is a Shapefile or other Vector data source that contains footprints of Raster data coverage. MapServer can use a tileindex to render a directory of raster data. The tileindex allows MapServer to only read the data that intersects the requested map extent, rather than reading all of the data.
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WCS is an OGC standard that describes how to systematically produce structured Raster cartographic data from a service and return them to a client
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WFS is an OGC standard that describes how to systematically produce structured Vector cartographic data from a service and return them to a client.
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WFS Server and WFS Client
Web Map Context is an OGC standard which allows for sharing of map views of WMS layers in multiple applications.
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WMS is an OGC standard that describes how to systematically produce rendered map images from a service and return them to a client.
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WMS Server and WMS Client