Table 6.72—DRM_Data_Table

Property

Description

Superclass

·         <DRM SEDRIS Abstract Base>

Class

·         <DRM Data Table>

Subclass

·         <DRM Mesh Face Table>

·         <DRM Property Grid>

·         <DRM Property Table>

Definition

This abstract DRM class specifies an n-dimensional array of data cells, each of which has the same data signature, representing some data set. The general nature of the data set being represented is indicated by the required <DRM Classification Data> component. The specific contents in the context of that <DRM Classification Data> are given by the <DRM Data Table>'s signature, that is, the combination of its ordered <DRM Axis>s and <DRM Table Property Description>.

The n dimensions of a <DRM Data Table> instance are specified by its n ordered <DRM Axis> components.

The complete structure of a cell within a <DRM Data Table> instance is described by the complete ordered set of <DRM Table Property Description> of that <DRM Data Table>; this set is also called the data signature, and applies to all cells of the <DRM Data Table>.

Additional information about any given cell property, where such information is to be applied throughout the scope of the <DRM Data Table>, such as sentinel values and tolerances, is specified by attaching <DRM Property Characteristic> components to the applicable <DRM Table Property Description>(s).

Example(s)

·         See individual subclasses for examples.

Inherited field elements

field_name

range

Field_Data_Type

none

 

 

Field elements

field_name

range

Field_Data_Type

none

 

 

Associated to (one-way) (inherited)

·         none

Associated to (one-way)

·         none

Associated by (one-way) (inherited)

·         none

Associated by (one-way)

·         none

Associated with (two-way) (inherited)

·         none

Associated with (two-way)

·         none

Composed of (two-way) (inherited)

·         none

Composed of (two-way)

·         one <DRM Classification Data>1

·         optionally, some {ordered} <DRM Image Mapping Function>s

·         optionally, a <DRM Time Constraints Data>

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)

·         zero or one <DRM Data Table Library>

·         zero or more <DRM Property Grid>s

Constraints

·         Index codes within tables

Notes

1 Indicates the kind of information represented by the <DRM Data Table>, such as terrain elevation or water characteristics.

Class diagram

<DRM Data Table>