ArcGIS Pro Topology

Geodatabase topology helps ensure data integrity. The use of topology provides a mechanism for performing integrity checks on data, helping to validate and maintain a better representation of features in a geodatabase.

Topology is the arrangement of the ways in which point, line, and polygonal features share geometry. The uses of topology include the following aspects:

(1) Limit how features share geometry. For example, adjacent polygons such as parcels have shared edges, street centerlines and census blocks share geometry, and adjacent soil polygons share edges.

(2) Define and enforce data integrity rules: there should be no gaps between two polygons, no overlapping features, etc.

(3) Support topological relationship query and navigation, such as determining element adjacency and connectivity.

(4) Support editing tools that can enforce topological constraints on data models.

(5) Construct elements based on unstructured geometry, such as creating polygons based on lines.

Topology has always been a key requirement of GIS in terms of data management and integrity. Typically a topological data model manages spatial relationships by representing spatial objects (point, line, and area features) as an underlying graph of topological raw data (nodes, areas, and edges). These primitives (along with their relationships to each other and the feature boundaries they represent) are defined by representing the feature geometry in a planar diagram of topological elements.

1 Topology rules in ArcGIS geodatabase

1.1 point rule

point rule

 1.2 Line Rules

line rule

line rule

1.3 Surface rules

surface rules

2 Rules in ArcGIS Pro Data Reviewer

 2.1 Attribute verification 

2.

attribute validation

2.2 Element integrity check

2.3

Element integrity check

2.3 Event checking

event checking

2.4 Geodatabase Checking 

Geodatabase Checking

2.5 Surface verification 

face check

2.6 Polyline check 

Polyline check

2.7 Spatial relationship checking

Spatial relationship checking