Use this tag for questions about the ArcSDE (Spatial Database Engine) component of Esri's ArcGIS for Server that is one way to enable access to spatial data stored in a Relational Database Management Systems (RDBMS).

ArcSDE is a component of ArcGIS for Server which enables ArcGIS client products and ArcObjects applications to access spatial data stored a Relational Database Management Systems (RDBMS). It presents that data as an Enterprise Geodatabase by either leveraging the underlying datastore's functionality (e.g., spatial indexes, xml fields, etc), or provides a default implementation if specific functionality is missing and thus cannot be delegated.

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