GIS Dictionary

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OLE View

[ESRI software] A utility, available as part of Microsoft Visual Studio, that can be used to view type information stored […]

on-demand cache

[ESRI software] In ArcGlobe, a temporary layer cache that is placed on disk and built as areas of the layer

one-to-many relationship

[database structures] An association between two linked or joined tables in which one record in the first table corresponds to

one-to-one relationship

[database structures] An association between two linked or joined tables in which one record in the first table corresponds to

one-way replication

[ESRI software] A type of geodatabase replication that allows data changes to be sent multiple times from the parent replica

ontology

[ocial context of GIS] In computer science, a data model that represents a domain by detailing the entities that comprise

open traverse

[surveying] In surveying, a traverse that does not close back upon itself or on another point of known position. As

OpenLS

[data sharing] Acronym for OpenGIS Location Services. A protocol, designed to work across the many different wireless networks and devices,

operand

A data value or the symbolic representation of a data value in an expression. Operands may be numbers, character strings,

operation codes

[surveying] In surveying, an alphanumeric or numeric value included in an instrument vendor’s data collector file format. Operation codes are

operator

[mathematics] The symbolic representation of a process or operation performed against one or more operands in an expression, such as

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