The SEDRIS DRM may be downloaded as part of the SEDRIS SDK Release from the SEDRIS SDK Downloads page.

• Description
Provides data representation model (DRM) background material, describes what is a DRM, and discusses the SEDRIS data representation model notation and modeling technique.

• DRM 4.1.4 Class Dictionary
Allows on-line viewing, and discusses the content and format of the Class Dictionary.
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• Model Notation
Provides a synopsis of the unified modeling language (UML) notation on which the SEDRIS data representation model is based, and discusses some minor extensions to the UML employed by SEDRIS.
< RETRIEVE or DOWNLOAD >

• DRM Constraints
The SEDRIS constraints express semantic restrictions regarding the practical use of specific elements of the DRM and the application program interface (API). These are issues associated with the notion that: This is how this part of the DRM is organized, but here is the most effective way of using that particular element. The current version of the DRM constraints may be retrieved for on-line viewing or may be downloaded for local use.
< RETRIEVE or DOWNLOAD >

• ILLUSTRATION PANELS

• The SEDRIS DRM descriptions are illustrated by a hierarchy of 23 separate panels or sheets.
• The DRM panels are available in the Unified Modeling Language (UML) format.
• < RETRIEVE or DOWNLOAD > the entire set, or view individual panels below.

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DRM Panels / Sheets

1 Transmittal structure     2 Model     3 Geometry representation     4 Aggregate geometry     5 Primitive geometry     6 Data table and property     7 Model instance     8 Feature representation     9 Base classes   10 Library   11 Topology hierarchy   12 Feature topology   13 Geometry topology   14 Colour representation   15 Spatial concepts   16 Expression   17 Control link   18 Vertex and finite element mesh   19 Property set   20 Time and metadata   21 Light and rendering properties _   22 Image and sound   23 Abstract class hierarchy