ISO 19109:2015

ISO 19109:2015 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.