Fundamentals of the geodatabase—ArcGIS Pro | Documentation
https://pro.arcgis.com/en/pro-app/latest/help/data/geodatabases/overview/fundamentals-of-the-geodatabase.htm
WEBThe geodatabase schema includes the definitions, integrity rules, and behavior for each of these extended capabilities. These include properties for coordinate systems, coordinate resolution, feature classes, topologies, networks, relationships, and domains. This schema information persists in a collection of geodatabase meta tables in the DBMS.
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