The SEDRIS Data Representation Model
APPENDIX A - Classes
Feature Hierarchy
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Abstract Class Name: Feature Hierarchy
Subclasses
Definition
An instance of this DRM class is a hierarchically organized collection of
<Feature Representation>
instances.
Primary Page in DRM Diagram:
Secondary Pages in DRM Diagram:
Example
See subclasses for examples.
FAQs
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Where can users find further information on feature topology in the DRM?
See P4V4
of the SEDRIS Documentation Set for further information.
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Why can't a
<Reference Surface> instance
be associated to a
<Feature Hierarchy> instance,
as with <Geometry Hierarchy> instances?
A <Reference Surface> instance is associated
to a <Geometry Hierarchy> instance to
indicate that the
<Geometry Hierarchy> instance represents
a reference surface. <Feature Hierarchy>
instances are not used to represent reference surfaces.
Constraints
Associated to (one-way) (inherited)
Associated by (one-way) (inherited)
Associated by (one-way)
Composed of (two-way) (inherited)
Composed of (two-way)
Composed of (two-way metadata) (inherited)
Component of (two-way) (inherited)
Component of (two-way)
Inherited Field Elements
This class has no inherited field elements.
Notes
Associated to Notes
An association between two
<Feature Representation> instances
indicates that the environmental object(s) that they
represent have the semantic relationship indicated by
the <Base Association Data>
link object on the association relationship.
An association between a
<Geometry Hierarchy> instance and a
<Feature Representation> instance
indicates that the environmental object(s) that they
represent have the semantic relationship indicated by
the <Base Association Data>
link object on the association relationship.
An association between a
<Property Grid> instance and a
<Feature Representation> instance
indicates that the environmental object(s) represented by the
<Feature Representation> instance
and the <Property Grid> instance
(or some specific cell data within that
<Property Grid> instance) have the
semantic relationship indicated by the
<Base Association Data> link object
on the association relationship. Each associated
<Property Grid> instance indicates
whether the entire <Property Grid>
instance or only some specific cell data within it is participating
in the relationship in question.
Associated from Notes
An association between two
<Feature Representation> instances
indicates that the environmental object(s) that they
represent have the semantic relationship indicated by
the <Base Association Data>
link object on the association relationship.
An association between a
<Geometry Hierarchy> instance and a
<Feature Representation> instance
indicates that the environmental object(s) that they
represent have the semantic relationship indicated by
the <Base Association Data>
link object on the association relationship.
An association between a
<Property Grid> instance and a
<Feature Representation> instance
indicates that the environmental object(s) represented by the
<Feature Representation> instance
and the <Property Grid> instance
(or some specific cell data within that
<Property Grid> instance) have the
semantic relationship indicated by the
<Base Association Data> link object
on the association relationship. Each associated
<Property Grid> instance indicates
whether the entire <Property Grid>
instance or only some specific cell data within it is participating
in the relationship in question.
Prev: Feature Face Ring.
Next: Feature Model.
Up:Index.
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Last updated: August 23, 2005
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Copyright © 2005 SEDRIS™
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