CEN/TC 287/WG 2 - Models and applcations gor geographic infomation

This European Prestandard establishes general principles for describing the quality of geographic information and provides a schema for describing data quality. This European Prestandard specifies information appropriate for the judging of quality of geographic information. This includes details of the derivation and usage of particular sets of geographic information and the results of measures of quality either against a pre-established scale or relative to similar information.

This European prestandard establishes a conceptual schema for metadata. Metadata can be defined at its simplest as 'data about datasets'. This European prestandard specifies those data which shall be used to describe a geographic dataset. This includes data about the content, representation, extent (both geometric and temporal), spatial reference, quality and administration of a geographic dataset. This European prestandard also identifies those data which are mandatory for describing geographic datasets, the minimum set of metadata.

This European Prestandard establishes principles for describing spatial schemas which can be part of application schemas. These schemas can be used for defining, structuring, querying, updating, encoding, transforming and transferring geographic data. The spatial schemas specify the constructs for the representation of geometry and topology of geographic objects. The constructs are defined in spatial schemas according to requirements from the applications.