The SEDRIS Data Representation Model (DRM) hierarchy is illustrated by separate sheets or diagrams. Continuation from one illustration to the next is indicated by a "Sheet Number".

The DRM Diagrams are individually viewable on-line at the SEDRIS web site (www.sedris.org), or may be downloaded as a complete set for local use.

• Sheet 1 <Transmittal Root> and <Environment Root>



• Sheet 2 <Model>



• Sheet 3 <Geometry>, <Geometry Hierarchy>, <Geometry Model Instance>, & <Property Grid Hook Point>



• Sheet 4 <Aggregate Geometry>



• Sheet 5 <Primitive Geometry>



• Sheet 6 <Data Table> and <Property>



• Sheet 7 <Geometry Model Instance>, <Feature Model Instance>, and <Transformation>



• Sheet 8 <Feature> and <Aggregate Feature>



• Sheet 9 <Base Data Classes> and <Volumes>



• Sheet 10 <Library> and <Label>



• Sheet 11 <Feature Topology Hierarchy> and <Geometry Topology Hierarchy>



• Sheet 12 <Feature Topology>



• Sheet 13 <Geometry Topology>



• Sheet 14 <Colour Tables>



• Sheet 15 <Location>



• Sheet 16 <Expressions>



• Sheet 17 <Control Link> Subclasses



• Sheet 18 <Hierarchical Table>, <Vertex>, and <Finite Element Mesh>



• Sheet 19 <Attribute Sets>



• Sheet 20 Time and Metadata



• Sheet 21 <Light Rendering Properties> and <Light Source>



• Sheet 22 <Image> and <Sound>



• Sheet 23 <Universal Superclass>