There are many topology rules you can implement in your geodatabase, depending on the spatial relationships that are most important for your organization to maintain. You should carefully plan the spatial relationships you will enforce on your features. Some topology rules govern the relationships of features within a given feature class, while others govern the relationships between features in two different feature classes or subtypes. Topology rules can be defined between subtypes of features in one or another feature class. This could be used, for example, to require street features to be connected to other street features at both ends, except in the case of streets belonging to the culdesac or deadend subtypes.
Many topology rules can be imposed on features in a geodatabase. A welldesigned geodatabase will have only those topology rules that define key spatial relationships needed by an organization.
Most topology violations have fixes that you can use to correct errors. Some topology rules, however, have no predefined fixes. Once you have discovered the topology errors, you can select the error on the map with the Fix Topology Error tool Fix Topology Error Tool, or select the error from within the Error Inspector.
For a poster of the available topology rules and examples of them, see the ArcGIS Geodatabase Topology Rules PDF.
If this link does not work, you can open the topology_rules_poster.pdf from the \Documentation folder in the directory where you installed ArcGIS. To view this document, you need a copy of Adobe Reader.
If you attempt to add certain newer topology rules to a geodatabase from an earlier ArcGIS release, you receive an error message and are prompted to upgrade the geodatabase release version.
Readme: https://bonbencutybevan.blogspot.com/...