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 form compatible with [ISO 19115].

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 = SE_RESTR_CODE_RESTRICTED;
    use_constraints = SE_RESTR_CODE_OTHER_RESTRICTIONS;
    other_constraints = "For Official Use Only";
    security. classification = SE_SEC_CL_CODE_SECRET;
    security. user_note = "No access by non-U.S. citizens";
    security. classification_system = "United States Department of Defense";
    security. handling_description = "Downgrade on 31 Dec 2004";
    use_limitation = "";

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_Restriction_Code access_constraints; (notes)
SE_Restriction_Code use_constraints; (notes)
SE_String other_constraints; (notes)
SE_Security_Constraints security; (notes)
SE_String use_limitation; (notes)

Notes

Fields Notes


access_constraints

 The access_constraints field expresses access constraints
 applied to assure the protection of privacy or intellectual
 property, and any special restrictions or limitations on
 obtaining the resource being described by the given instance
 of <Access>.

use_constraints

 The use_constraints field expresses constraints applied to
 assure the protection of privacy or intellectual property,
 and any special restrictions or limitations or warnings on
 using the resource being described by the given instance of
 <Access>.

other_constraints

 The other_constraints field specifies other restrictions and
 legal prerequisites for accessing and using the resource
 being described by the given instance of <Access>.

security

 The security field specifies the security classification for the
 given data object.

use_limitation

 If non-empty, the use_limitation field specifies a limitation
 affecting the fitness for use of the resource being described by the
 given instance of <Access>.

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Last updated: July 16, 2004 Copyright © 2004 SEDRIS