GIS Dictionary

Definitions for GIS terms related to operations such as analysis, GIS modeling and web-based GIS, cartography, and Esri software.

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instance

See Also: instantiation

  1. [computing] In object-oriented programming, a single object created based on the template or definition of the class to which it belongs.
  2. [ESRI software] In ArcSDE, a single installation of ArcSDE associated with a single database.
  3. [ESRI software] In ArcIMS, the fundamental processing unit of the Spatial Server. An instance takes a request and generates a response that can be sent back to a client.