Table 6.99—DRM_Feature_Model
|
Property |
Description |
||||||
|
Superclass |
|||||||
|
Class |
· <DRM Feature Model> |
||||||
|
Subclass |
· none |
||||||
|
Definition |
An instance of this DRM class is a collection of feature attributes and the necessary hierarchy and attributes required to build a <DRM Feature> representation of an environmental entity, defined in the single spatial reference frame specified by its <DRM Model> aggregate. |
||||||
|
Example(s) |
· A segment of railroad track, represented as a <DRM Linear Feature> under a <DRM Union of Features> component of the <DRM Feature Model>. Where the <DRM Linear Feature> component has been properly attributed with a <DRM Classification Data> component and with <DRM Property Value> components describing its mobility and material properties. · An airport modeled as a set of <DRM Feature> objects contained in a <DRM Feature Hierarchy> under a <DRM Feature Model> object. In such a case, the airport could be represented using <DRM Linear Feature> objects for runways, <DRM Areal Feature> objects representing the terminal and hangars, and <DRM Point Feature> objects representing personnel or vehicles. |
||||||
|
Inherited field elements |
|
||||||
|
Field elements |
|
||||||
|
Associated to (one-way) (inherited) |
· none |
||||||
|
Associated to (one-way) |
· none |
||||||
|
Associated by (one-way) (inherited) |
· none |
||||||
|
Associated by (one-way) |
· zero or more <DRM Feature Model Instance>s |
||||||
|
Associated with (two-way) (inherited) |
· none |
||||||
|
Associated with (two-way) |
· none |
||||||
|
Composed of (two-way) (inherited) |
· none |
||||||
|
Composed of (two-way) |
· zero or one <DRM Feature Hierarchy>1 · zero or one <DRM Point Of Contact> |
||||||
|
Composed of (two-way metadata) (inherited) |
· none |
||||||
|
Composed of (two-way metadata) |
· zero or one <DRM Access> · zero or more <DRM Browse Media>s · zero or one <DRM Citation> · zero or more <DRM Cross Reference>s · zero or one <DRM Data Quality> · zero or one <DRM Description> · zero or one <DRM Keywords> · zero or one <DRM Point Of Contact> |
||||||
|
Component of (two-way) (inherited) |
· none |
||||||
|
Component of (two-way) |
· one <DRM Model> |
||||||
|
Constraints |
· none |
||||||
|
Notes |
1 This is actually required, except when the Non-empty model constraint is applicable. |
||||||
|
Class diagram |