NEN-EN-ISO 19109:2006 en

This International Standard defines rules for creating and documenting application schemas, including principles for the definition of features. The scope of this International Standard includes the following: conceptual modelling of features and their properties from a universe of discourse; definition of application schemas; use of the conceptual schema language for application schemas; transition from the concepts in the conceptual model to the data types in the application schema; integration of standardized schemas from other ISO geographic information standards with the application schema. The following are outside the scope: choice of one particular conceptual schema language for application schemas; definition of any particular application schema; representation of feature types and their properties in a feature catalogue; representation of metadata; rules for mapping one application schema to another; implementation of the application schema in a computer environment; computer system and application software design; programming.