1. Validation in a seamless environment Jonathan Holmes Ordnance Survey GB 21 st October 2013

2. Editing solution Central Database Products Object Editor

3. Validation Object EditorValidationUnmarshallerHeightingValidationLife CyclesCommit Central Database

4. Validation

5. Invalid turn restrictions

8. Links that should be navigable

9. Isolated road classifications

10. Short links at junctions

11. Invalid levels

12. Missing one ways

13. Boundary links must be valid

14. Roundabout links must form a clockwise loop

15. Invalid overhead data

17. Topo Tests Slopes not valid in water Construction area outline must bound construction area Building division must have building area on both sides Water culvert must be coincident with end of a water line Top of cliff or slope always has cliff or slope area to the right Check Combination Of Form, Function And Geometry Is Valid (Letter box cannot have a function of supermarket)

18. Continuity of tide lines

19. Topo tests Check that mean low water has intertidal on one side and tidal on the other High tide line must contain tidal water Check for small gaps Height vertices are in range

20. Address tests Address state combinations must be valid Address with a primary structure must sit within it.

21. Post Commit tests National tests for network connectivity