Abstract Class Name: Base Time Data

Superclass - SEDRIS Abstract Base

Subclasses

• Month
• Season (notes)
• Time Interval (notes)
• Time of Day (notes)
• Time Point (notes)

Definition

Used to describe a time period for the purpose of specifying Base Time Constraints Data.

Primary Page in DRM Diagram:

• 20

Example

1. The time at which an event happened in a historical database, i.e. Oct 3 17:56:47 GMT 1994, would be specified by an Absolute Time Point. For clarity, the time_significance field would be set to SE_TIME_OF_OCCURRENCE.

2. An object becomes active 20 minutes after the simulation starts. That is, its activation time is expressed in simulation time (relative to the start of the simulation), so the activation time would be specified using Relative Time Point. The time_significance field would be set to SE_CONTEXT_DETERMINED.

3. To specify the time period covered by the data in the transmittal, add an Absolute Time Interval with time_significance set to SE_PERIOD_OF_CONTENT to the Transmittal Root object.

Constraints

Component of (one-way)

• optionally, some Base Time Constraints Data
• optionally, some Environment Roots
• optionally, a Transmittal Root

Field Elements

Notes

Fields Notes

time_significance

 Used to indicate the significance of the time information