The SEDRIS Data Representation Model
APPENDIX A - Classes
Time Interval

Abstract Class Name: Time Interval

Superclass - <Base Time Data>

Subclasses

Definition

An instance of DRM class specifies an interval of time, defined by a start time and a stop time.

Primary Page in DRM Diagram:

Secondary Pages in DRM Diagram:

Example

See concrete subclasses for examples.

FAQs

What is the purpose of this class?

This class provides 1) ISO 19115-compliant metadata that describes the time period within which a high-level DRM object (e.g., an instance of <Transmittal Root>, <Model>, or <Image>) is valid, and 2) a general-purpose mechanism for describing time intervals. The <Time Interval> allows potential users of a transmittal to evaluate the time period covered by the transmittal, without necessarily having to actually obtain or examine the transmittal itself.

Constraints

Component of (two-way) (inherited)

Component of (two-way)

Inherited Field Elements

SE_Time_Significance time_significance; 1

Notes

Fields Notes

time_significance

The time_significance field specifies the usage of the time information.


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Last updated: July 26, 2006 Copyright © 2006 SEDRIS