Glossary of Terms - E

Earth model
An approach to abstracting the Earth. The data model for the Earth.
1-dimensional topology primitive (see OGC Abstract Specification (Topic 1) clause 7.3.14)
European Environment Agency
In object-oriented programming, data can be encapsulated in an object, which means all access to the data and manipulation of the data occurs through the object`s methods. Legacy software or data can be encapsulated by giving it an interface that is compatible with object software.
engineering viewpoint
RM-ODP viewpoint that relates a system`s purposes, content, and functions to specific components linked by a communications network. This viewpoint is concerned primarily with the interaction between distinct computational objects: its chief concerns are communication, computing systems, software processes and the clustering of computational functions at physical nodes of a communications network. The engineering viewpoint also provides terms for assessing the "transparency" of a system of networked components - that is, how well each piece works without detailed knowledge of the computational infrastructure. The engineering viewpoint can be described in terms of UML collaboration diagrams and deployment diagrams.
In the context of computing, an enterprise is a large organization whose many offices, agencies, workers and partners must be able to communicate and share information effectively and efficiently.
enterprise application
Software that automates a business process that spans many business units
enterprise viewpoint
Describes the business or organizational perspective, context, purpose, scope and policies governing a distributed information system. The ORM enterprise viewpoint highlights geospatial location as a fundamental information ingredient and provides a representative value chain of geospatial information within an enterprise or an information community. The ORM enterprise viewpoint includes the major requirements on OGC technology as derived from the described value chain.
Earth observation, i.e., remote sensing.
HDF-EOS is an extension of NCSA (National Center for Supercomputing Applications) Hierarchical Data Format. HDF-EOS adds mechanisms for storing geo-referencing and temporal information, data organization, and metadata storage. HDF-EOS contains Grid, Point and Swath structures.
Source: PreANVIL Glossary
European Spatial Data Information Infrastructure
Source: PreANVIL Glossary
The Research programme of the European Union until 1998
Source: PreANVIL Glossary
European Territorial Management Information Infrastructure: a Fifth Framework project supporting consensus-building on Data issues.
A type of local-area network used for high-speed communication among computers.
Source: PreANVIL Glossary
European Umbrella Organisation for Geographic Information: members are national associations (e.g. The Association for Geographic Information in the UK) and related pan-European sector bodies.
exemplar implementation
An operational, conformant implementation of an implementation specification that is made available for public use for testing purposes (Exemplar Implementations refer to OpenGIS Implementation Specifications.)
The ability for a system or components of a system to expand by assimilating new data, software or hardware components.
extrinsic resource
A registered resource associated with a repository item for which the content model is not defined by the RIM. It may be located in a repository not managed by a Registration Authority, and its content may be represented by any Internet Media Type (e.g. application/pdf, image/svg+xml).

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