Field Definitions are Available Here
Collection
varstring(80)
Optional
This is a data modeling logical reference to a map projection.
http://spatialreference.org/ref/epsg/4311
MapProjectionName
http://spatialreference.org/ref/epsg/4311
Must be used with MapProjectionName.
METADATA > COLLECTIONMETADATA > Spatial > CoordinateSystemContainer > HorizontalCoordinateSystemContainer > PlanarCoordinateSystems > PlanarCoordinateSystem > PlanarCoordinateSystemContainer > MapProjection.MapProjectionPointer
Pointer - catalogue relationship
Spatial Information