The Open Geospatial Consortium, Inc. (OGC) is a nonprofit, international, voluntary consensus standards organization that is leading the development of standards for geospatial and location-based services. The OGC defines different ways to represent geospatial information as bytes of data that can then be interpreted by the
GEOGRAPHY types as being
LINESTRINGS, and so on. SQL Server 2012 supports three such formats:
Well-Known Text (WKT)
Well-Known Binary (WKB)
Geography Markup Language ...