EN ISO 19136:2009

Foreword
Introduction
1 Scope
2 Conformance
   2.1 Conformance requirements
   2.2 Conformance classes related to GML application
         schemas
   2.3 Conformance classes related to GML profiles
   2.4 Conformance classes related to GML documents
   2.5 Conformance classes related to software
         implementations
3 Normative references
4 Terms and symbols
   4.1 Terms and definitions
   4.2 Symbols and abbreviated terms
5 Conventions
   5.1 XML namespaces
   5.2 Versioning
   5.3 Deprecated parts of previous versions of GML
   5.4 UML notation
   5.5 XML Schema
6 Overview of the GML schema
   6.1 GML schema
   6.2 GML application schemas
   6.3 Relationship between the ISO 19100 series of
         International Standards, the GML schema and GML
         application schemas
   6.4 Organization of this International Standard
   6.5 Deprecated and experimental schema components
7 GML schema - General rules and base schema components
   7.1 GML model and syntax
   7.2 gmlBase schema components
8 GML schema - Xlinks and basic types
   8.1 Xlinks - Object associations and remote properties
   8.2 Basic types
9 GML schema - Features
   9.1 General concepts
   9.2 Relationship with ISO 19109
   9.3 Features
   9.4 Standard feature properties
   9.5 Geometry properties
   9.6 Topology properties
   9.7 Temporal properties
   9.8 Defining application-specific feature types
   9.9 Feature collections
   9.10 Spatial reference system used in a feature or feature
         collection
10 GML schema - Geometric primitives
   10.1 General concepts
   10.2 Abstract geometric primitives
   10.3 Geometric primitives (0-dimensional)
   10.4 Geometric primitives (1-dimensional)
   10.5 Geometric primitives (2-dimensional)
   10.6 Geometric primitives (3-dimensional)
11 GML schema - Geometric complex, geometric composites and
   geometric aggregates
   11.1 Overview
   11.2 Geometric complex and geometric composites
   11.3 Geometric aggregates
12 GML schema - Coordinate reference systems schemas
   12.1 Overview
   12.2 Reference systems
   12.3 Coordinate reference systems
   12.4 Coordinate systems
   12.5 Datums
   12.6 Coordinate
13 GML schema - Topology
   13.1 General concepts
   13.2 Abstract topology
   13.3 Topological primitives
   13.4 Topological collections
   13.5 Topology complex
14 GML schema - Temporal information and dynamic features
   14.1 General concepts
   14.2 Temporal schema
   14.3 Temporal topology schema
   14.4 Temporal reference systems
   14.5 Representing dynamic features
15 GML schema - Definitions and dictionaries
   15.1 Overview
   15.2 Dictionary schema
16 GML schema - Units, measures and values
   16.1 Introduction
   16.2 Units schema
   16.3 Measures schema
   16.4 Value objects schema
17 GML schema - Directions
   17.1 Direction schema
   17.2 direction, DirectionPropertyType
   17.3 DirectionVectorType
   17.4 DirectionDescriptionType
18 GML schema - Observations
   18.1 Observations
   18.2 Observation schema
19 GML schema - Coverages
   19.1 The coverage model and representations
   19.2 Grids schema
   19.3 Coverage schema
20 Profiles
   20.1 Profiles of GML and application schemas
   20.2 Definition of profile
   20.3 Relation to application schema
   20.4 Rules for elements and types in a profile
   20.5 Rules for referencing GML profiles from application
         schemas
   20.6 Recommendations for application schemas using GML
         profiles
   20.7 Summary of rules for GML profiles
21 Rules for GML application schemas
   21.1 Instances of GML objects
   21.2 GML application schemas
   21.3 Schemas defining Features and Feature Collections
   21.4 Schemas defining spatial geometries
   21.5 Schemas defining spatial topologies
   21.6 Schemas defining time
   21.7 Schemas defining coordinate reference systems
   21.8 Schemas defining coverages
   21.9 Schemas defining observations
   21.10 Schemas defining dictionaries and definitions
   21.11 Schemas defining values
   21.12 GML profiles of the GML schema
Annex A (normative) - Abstract test suites for GML application
        schemas, GML profiles and GML documents
Annex B (normative) - Abstract test suite for software
        implementations
Annex C (informative) - GML schema
Annex D (normative) - Implemented Profile of the ISO 19100
        series of International Standards and Extensions
Annex E (normative) - UML-to-GML application schema encoding
        rules
Annex F (normative) - GML-to-UML application schema encoding
        rules
Annex G (informative) - Guidelines for subsetting the GML schema
Annex H (informative) - Default styling
Annex I (informative) - Backwards compatibility with earlier
        versions of GML
Annex J (informative) - Modularization and dependencies
Bibliography
Index

The Geography Markup Language (GML) is an XML encoding in compliance with ISO 19118 for the transport and storage of geographic information modelled in accordance with the conceptual modelling framework used in the ISO 19100 series of International Standards and including both the spatial and non-spatial properties of geographic features.ISO 19136:2007 defines the XML Schema syntax, mechanisms and conventions that:provide an open, vendor-neutral framework for the description of geospatial application schemas for the transport and storage of geographic information in XML; allow profiles that support proper subsets of GML framework descriptive capabilities; support the description of geospatial application schemas for specialized domains and information communities; enable the creation and maintenance of linked geographic application schemas and datasets; support the storage and transport of application schemas and data sets; increase the ability of organizations to share geographic application schemas and the information they describe. Implementers may decide to store geographic application schemas and information in GML, or they may decide to convert from some other storage format on demand and use GML only for schema and data transport.NOTE If an ISO 19109 conformant application schema described in UML is used as the basis for the storage and transportation of geographic information, ISO 19136 provides normative rules for the mapping of such an application schema to a GML application schema in XML Schema and, as such, to an XML encoding for data with a logical structure in accordance with the ISO 19109 conformant application schema.