ENV 13376 : DRAFT 99

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 Application schema
  5.1 General
  5.2 The modelling process
  5.3 Parts of the application schema
  5.4 Use of EXPRESS language
  5.5 Identification of application schemas
  5.6 Temporal aspects
  5.7 Presentation aspects
  5.8 Use of sound, video and other binary modes
6 Development of the application schema
  6.1 Defining the semantic schema
  6.2 Using the spatial schema
      6.2.1 Referencing a geometric primitive or a
            topological primitive
      6.2.2 Choice of spatial schema
      6.2.3 Referencing different spatial schemas from
            one semantic schema
      6.2.4 Referencing the same spatial schema for two
            separate spatial views
  6.3 Using the direct positioning schema
      6.3.1 Method 1
      6.3.2 Method 2
  6.4 Using the geographic identifiers schema
  6.5 Using the quality schema
      6.5.1 Quality information at the dataset level
      6.5.2 Quality information at the level of a part
            of a dataset
      6.5.3 Quality information at the instance level
7 Documentation of an application schema
  7.1 Title
  7.2 Scope
  7.3 Conformance statement
  7.4 Application schema
Annex A (informative) Guidelines for developing application
        schemas when using EXPRESS
  A.1 Introduction
  A.2 EXPRESS modelling concepts
      A.2.1 Schema
      A.2.2 Entity
      A.2.3 Attribute
      A.2.4 Relationships
      A.2.5 Constraints
  A.3 Guidelines for writing EXPRESS schemas
      A.3.1 Phase 1: Identification of relationships and
            attributes
      A.3.2 Phase 2: Specification of relationships and
            attributes
      A.3.3 Phase 3: Specifications of constraints
      A.3.4 Phase 4: Schema integration
      A.3.5 Checklist
  A.4 Guidelines for integrating EXPRESS schemas
      A.4.1 Schema interfacing
      A.4.2 Schema integration
  A.5 Schema style
Annex B (informative) Example of an application schema
  B.1 The role of an application schema
  B.2 Scope and context
  B.3 Overview
  B.4 EXPRESS definition
      B.4.1 Initial definitions
      B.4.2 Definitions of defined types
      B.4.3 Definitions of entities
      B.4.4 Terminating definitions

Gives rules for using the Geographic Information European Prestandards and the data description techniques for the development of applications for geographic information. Aspects included are: - how to define entities and their properties; - integrating the standardised schemas - development of metadata - representing contents of an application schema as metadata; - practical development methods for modelling; - defining any particular application schema, and - mapping between internal schemas and the application schema specification of necessary rules for using ENV 12658.