The SEDRIS Data Representation Model
APPENDIX B - Constraints
Property Set Table Size

Definition

For a given <Property Set Table Group> instance G with table_size = k, each <Property Set Table> component Tof G shall have k <Property Set> components.

For any given T within G, if regular = SE_TRUE, each of the k <Property Set> components of T shall contain the same number of DRM objects, and these DRM objects shall belong to the same classes. If regular = SE_FALSE for T, no such constraint holds.

Note that G may have both regular and non-regular <Property Set Table> components, and that even if all <Property Set Table> components of G are regular, there is no constraint that they are all regular in the same way.

Rationale

This is a requirement in order to allow the <Property Set Table> components within a <Property Set Table Group> instance to be interchangeable.

Example

  1. Consider a <Property Set Table Group> instance that contains three <Property Set Table> components: one for an OTW view, one for a RADAR view, and one for an infrared view. All three <Property Set Table> instances contain 234 <Property Set> instances. Entry 234 in each <Property Set Table> contains a <Property Set> for the representation of "steel" in the three different domains.

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Last updated: July 26, 2006 Copyright © 2006 SEDRIS