Course GML Foundations

  • Content
  • Training
  • Modules
  • General
  • Reviews
  • Certificate
  • Course GML Foundations : Content

    In the course GML Foundations participants learn to deal with the OpenGIS Geography Markup Language Encoding Standard (GML).

    GML Intro

    GML is an XML vocabulary to express geographic properties. GML is not only a modeling language for geographic systems, but also an open standard for geographic transactions over the Internet.

    GML Grammar

    Like all XML vocabularies the GML grammar has two parts: an XML Schema that describes the document structure and instance documents that describe the actual data.

    GML Variants

    In the course different variants of GML syntax are discussed such as INSPIRE GML and AIXM5 GML.

    XML Syntax

    The course starts with an overview of the basic concepts of XML such as the XML document structure, the XML syntax rules and the difference between well formed and valid documents. The role of XML Namespaces is also discussed here.

    XML Schema Standard

    Subsequently the XML Schema standard is discussed, which defines the naming, sequence and data types of XML instance documents based on a schema. The different styles of XML Schema construction and the definition of simple and complex user defined data types are discussed.

    GML Data Model

    Then attention is paid to the GML data model with the Features, Geometry, Topology and Temporal Schemas. And also the GML domain vocabulary with Spatial Values, Object Property Rules, Associations and the role of Attributes is discussed.

    GML Components

    An explanation of GML components such as Points and Curves, Surfaces and Solids, Nodes, Edges, Faces and Curve Segments are also part of the course program. This also includes Surface Patches, Interpolated Curves, Coverages and Surface Interpolation.

    GML Coordinate System

    Finally the GML Coordinate Systems with CRS Dictionary Entries, Units of Measure and Quantity Types and GML Modeling with Schema Repositories, Substitution Groups and Schema Modularization are discussed.

  • Course GML Foundations : Training

    Audience Course GML Foundations

    The course GML Foundations course is intended for analysts and developers who want to learn the basics of GML and apply GML in geographic information systems.

    Prerequisites Course GML Foundations

    Basic knowledge XML is required to participate in this course.

    Realization Training GML Foundations

    The theory is discussed on the basis of presentation slides. The theory is explained further by means of practical demos. After discussing a module, there is the possibility to practice. Course times are from 9.30 to 16.30.

    Certification GML Course

    Participants receive an official certificate GML Foundations after successful completion of the course.

    Course GML Foundations
  • Course GML Foundations : Modules

    Module 1 : XML Review

    Module 2 : XML Schema

    Module 3 : GML Model

    Structured Documents
    XML as Meta Language
    XML Document Structure
    XML Elements and Attributes
    Well Formed Documents
    Valid Documents
    Processing Instructions
    Entity References
    CDATA Sections
    Character References
    XML Presentation
    XML Transformation
    Use of XML Schema
    Well Formed versus Valid
    XML Schema Components
    XML Schema Vocabulary
    XML Schema-instance
    Simple and Complex Types
    Design Approaches
    Salami Slice Design
    Russian Doll Design
    Venetian Blind Design
    XML Schema Data Types
    Global and Local Declarations
    Annotating Schema's
    Core Schema Components
    Features Schema
    Geometry Schema
    Topology Schema
    Temporal Schema
    Domain Vocabulary
    Spatial Values
    Object Property Rule
    RDF as Reference
    Remote Properties
    Role of Attributes

    Module 4 : GML Components

    Module 5 : Coordinate Systems

    Module 6 : GML Modeling Rules

    Points and Curves
    Surfaces and Solids
    Surface Patches
    Interpolated Curves
    Surface Interpolation
    Curve Segments
    Topology Primitives
    Nodes, Edges and Faces
    Domain Sets
    Range Set
    Grid Function
    CRS Reference System
    GML Attribute srsName
    CRS Dictionary Entries
    New CRS Components
    Temporal Components
    Dynamic Features
    Abstract Feature Type
    Temporal Primitives
    Temporal Reference Systems
    Units of Measure
    Base Unit Dictionaries
    Quantity Types
    Feature Types
    Feature Collections
    Spatial Types
    Spatial Properties
    Managing Namespaces
    Import versus Include
    Schema Repositories
    Substitution Groups
    Schema Modularization
    Derive by Extension
    Derive by Restriction
  • Course GML Foundations : General

    Course Forms

    All our courses are classroom courses in which the students are guided through the material on the basis of an experienced trainer with in-depth material knowledge. Theory is always interspersed with exercises.


    We also do custom classes and then adjust the course content to your wishes. On request we will also discuss your practical cases.

    Course times

    The course times are from 9.30 to 16.30. But we are flexible in this. Sometimes people have to bring children to the daycare and other times are more convenient for them. In good consultation we can then agree on different course times.


    We take care of the computers on which the course can be held. The software required for the course has already been installed on these computers. You do not have to bring a laptop to participate in the course. If you prefer to work on your own laptop, you can take it with you if you wish. The required software is then installed at the start of the course.


    Our courses are generally given with Open Source software such as Eclipse, IntelliJ, Tomcat, Pycharm, Anaconda and Netbeans. You will receive the digital course material to take home after the course.


    The course includes lunch that we use in a restaurant within walking distance of the course room.


    The courses are planned at various places in the country. A course takes place at a location if at least 3 people register for that location. If there are registrations for different locations, the course will take place at our main location, Houten which is just below Utrecht. A course at our main location also takes place with 2 registrations and regularly with 1 registration. And we also do courses at the customer’s location if they appreciate that.


    At the end of each course, participants are requested to evaluate the course in terms of course content, course material, trainer and location. The evaluation form can be found at https://www.klantenvertellen.nl/reviews/1039545/spiraltrain?lang=en. The evaluations of previous participants and previous courses can also be found there.


    The intellectual property rights of the published course content, also referred to as an information sheet, belong to SpiralTrain. It is not allowed to publish the course information, the information sheet, in written or digital form without the explicit permission of SpiralTrain. The course content is to be understood as the description of the course content in sentences as well as the division of the course into modules and topics in the modules.

  • Course GML Foundations : Reviews

  • Course GML Foundations : Certificate