The SEDRIS Data Representation Model
APPENDIX A - Classes
Access

Class Name: Access

Superclass - <SEDRIS Abstract Base>

Subclasses

This DRM class is concrete and has no subclasses.

Definition

An instance of this DRM class specifies the security classification and any access and / or usage constraints for its containing SEDRIS object, provided in a [CSDGM]-compliant form.

Primary Page in DRM Diagram:

Secondary Pages in DRM Diagram:

Example

  1. Given a <Transmittal Root> that has restricted access (no access by non-U.S. citizens) and is for official use only, its <Access> information might be
    access_constraints = "NOFORN";
    use_constraints = "FOUO";
    security. system = "United States Department of Defense";
    security. classification = "SECRET";
    security. handling = "Downgrade on 31 Dec 1999";

FAQs

What is the purpose of this class?

This class supports the creation of SEDRIS transmittals that contain classified or sensitive data.

How is the security classification of a SEDRIS object related to the security classifications of its component objects, or to the security classification of its containing object?

In general, the rules for security classification metadata for the SEDRIS objects within a transmittal are the same as the rules for security classification markings of the paragraphs and sections within a hierarchically structured classified document. The security classification of an object shall be at least as high as the highest of the security classifications of its components, and may be higher if the aggregation of the components allows additional information to be inferred. Therefore, the security classification of an object shall be no higher than the security classification of its containing object. Unclassified objects need not have an <Access> component, unless they are unclassified components of a classified containing object.

Constraints

Component of (two-way)

Inherited Field Elements

This class has no inherited field elements.

Field Elements

SE_String access_constraints; (notes)
SE_String use_constraints; (notes)
SE_Security_Info security; (notes)

Notes

Fields Notes


access_constraints

 This specifies the restrictions on access to the given
 data object (Optional).

use_constraints

 This specifies the restrictions on use of the given
 data object (Optional).

security

 This specifies the security classification for the given
 data object (Mandatory)

Prev: Absolute Time Point. Next: AEC Location 3D. Up:Index.

Last updated: October 1, 2002 Copyright © 2002 SEDRIS™