ArcGIS adds a column to store extra geometric elements
The geometry and geography types cannot store all types of geometric elements that geodatabases must support. Therefore, when you create or register a feature class that uses the geometry or geography storage type with a geodatabase in SQL Server, ArcGIS adds a column to the business table to store these additional geometric elements. The column is called gdb_geomattr_data. The additional geometric elements include the following:
- Parametric objects such as circular arcs and Bezier curves created with advanced editing tools
- PointIDs
- Multipatch features
- Surface patches from ArcGIS Spatial Analyst
When ArcGIS detects the data source has these additional geometric elements, a simple geometric representation is stored in the shape column and the unmodified data (including the additional elements) is stored in the gdb_geomattr_datacolumn.
