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A field of type UUID (Universal Unique Identifier) in which values are automatically assigned by the geodatabase when a table row is created. The GlobalID field is necessary for maintaining object uniqueness across replicas. All feature classes and tables participating in one-way or two-way replication must contain the GlobalID field. This field is not editable and is automatically populated when it is added for existing data.[1] A GlobalID is often used as the primary key in the database table, but it is different than the typical OBJECTID or FID field. A GlobalID is often created in ArcGIS by right-clicking in the ArcCatalog tree and choosing "Add Global IDs". It can be applied to standalone feature classes or tables, or applied to an entire feature dataset.


  1. Wade, T. and Sommer, S. eds. A to Z GIS: An illustrated dictionary of geographic information systems, ESRI Press, 2006

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