Topology in ArcGIS

LEARNING OBJECTIVES

1. Define topology
2. Describe map topology
3. Describe geodatabase topology
4. Describe coincidence
5. Explain how topology helps with analysis and data integrity
6. Define cluster tolerance
7. Define ranks in a topology
8. List several topology rules
9. Describe topology validation
10. List several types of topology errors
11. Discuss 2 ways topology errors may be fixed.

TERMS TO KNOW

• topology
• map topology
  
• geodatabase topology
• connectivity
• adjacency
• containment
• validation
• topology errors
• data integrity
• coincidence
• cluster tolerance
• ranks
  

CLASS DISCUSSION

In ArcGIS there are 2 types of topology.

• Map Topology: Available at the ArcView license. Used during an edit session to ensure coincident features maintain coincidence while editing.

• Geodatabase Topology: Available only with ArcEditor and ArcInfo licenses. Powerful rule based topology that help with data validation.

** See supplement resources below for more information on both these topics.

Working with Geodatabase Topology - ESRI LIVE Training Seminar (recorded at an earlier date)

ACTIVE LEARNING EXERCISE

Creating and Editing Geodatabase Topology with ArcGIS Desktop (for ArcEditor and ArcInfo)

SUPPLEMENTAL RESOURCES

fom the ESRI WebHelp
About Topology
Basics of Map Topology
Topology in ArcGIS - Geodatabase Topology
Geodatabase Topology Rules