The SEDRIS Data Representation Model
APPENDIX A - Classes
Time Interval

Abstract Class Name: Time Interval

Superclass - <Base Time Data>

Subclasses

Definition

An instance of this 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 specific subclasses for examples.

FAQs

What is the purpose of this class?

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

Constraints

None.

Component of (two-way)(inherited)

Component of (two-way)

Inherited Field Elements

SE_Time_Significance time_significance; (notes)

Notes

Fields Notes


time_significance

 This indicates the significance of the time information.

Prev: Time Constraints Data. Next: Time Of Day. Up:Index.

Last updated: May 15, 2003 Copyright © 2003 SEDRIS™