Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/GDB|GeoGateway+Data+Model|Vectors+(VEC)|Topology">Topology</a><hr>
<br><b>Topological Node Layers</b><br>
In addition to the topological metadata information, a topological node 
layer must have the following attribute:<p>
ArcIdList: (GDBFieldTypeCountedInt) List of arc ShapeIds starting or
ending at this node.<p>
Each node should also have one vertex defining the position of the node.<p>
A node layer must have ARC_REF, and AREA_REF metadata pointing to the
related arc, and area layers. It must also have a LAYER_TYPE of TOPO_NODES
indicator in metadata.
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Parent Topic: <A href="http://www.pcigeomatics.com/cgi-bin/pcihlp/GDB|GeoGateway+Data+Model|Vectors+(VEC)|Topology">Topology</a><br>
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