ISO13582-part2

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Information model

In order to exchange OID and their metadata between different registries and applications the following additional data items beyond the OID itself need to be taken under consideration (see also [1] [2]):

  • descriptions
  • status information
  • categorization
  • time information
  • comments
  • versions
  • links
  • relationships to other OIDs and external sources
  • registering and responsible organizations
  • associated persons.

An information model with all classes, attributes and their properties aiming on a common understanding of the requirements of an OID registry has been created (Figure 1).

OID Registry Model (Draft)

XML exchange format

Data exchange can be facilitated by a standardized representation of the complete set of information as an XML structure together with the associated checks of underlying constraints and business rules. This XML structure for importing and exporting OID amongst different registries and other healthcare applications is aiming on the availability of reliable information about OIDs.

The following sections summarise and explain classes and their attributes.

Registry

This is the basic information about the OID-Registry hosting the OIDs.

Oid-registry.jpg

Attributes

Attribute Description DT Card Conf Length
validTime validity time interval IVL_TS 1..* mandatory -
scopedOIDs List of scoped root OIDs ST.OID 0..* optional 64
name Official name of the OID registry ST 1..1 mandatory 64
description Description of the OID registry, possible in multiple languages ED 0..* optional -

validTime

This is the validity time interval, i.e. the begin (and end) time when this registry is/was responsible for registering OIDs. This can be a list of intervals.

scopedOIDs

List of scoped root OIDs, i.e. the OIDs for which this OID registry is responsible for registration.

name

Official name of the OID registry

description

A description of the OID registry, possible in multiple languages

Associations

Association Description Class Card Conf
person Contact person(s) Person 1..* mandatory
hostingOrganization Hosting organization Organization 1..* mandatory
oid List of OIDs Oid 0..* required

Example

<registry>

    <validTime>
        <low value="20100501"/>
    </validTime>

    <scopedOID value="1.2.3.4.5"/>

    <name value="The best OID registry ever"/>
    <description language="en-US" value="This is a test OID registry, although the best"/>

    <person> ... </person>
    <hostingOrganization> ... </hostingOrganization>

    <oid> ... </oid>

</registry>

Oid

This class contains the registered OID and the associated meta data.

Oid-OID.jpg

Attributes

Attribute Description DT Card Conf Length
dotNotation registered OID, dot notation ST.OID 1..1 mandatory 64
asn1Notation ASN.1 notation ST.ASN1 0..1 optional 128
iriNotation IRI notation ST.IRI 0..1 optional 128
symbolicName symbolic name ST.SYMB 0..1 optional 128
category OID category CS 1..1 required -
status OID status CS 1..1 mandatory -
creationDate date of creation TS 0..1 optional -
realm countries CS 0..* optional -
description textual description ED 1..* mandatory -

dotNotation

The OID in dot notation of SNMP or ASN.1/XER.

Example:

2.16.528

asn1Notation

The OID in ASN.1 notation with (optional) identifiers and numbers.

Examples:

{joint-iso-itu-t(2) country(16) nl(528)}
{itu-t(0) recommendation(0) a(1)}

iriNotation

The OID in Internationalized Resource Identifier[3] (IRI) notation.

Example:

oid:/Country/528

symbolicName / Secondary Arc Identifier

A symbolic short name, unique among the siblings of the arc of the OID.

The ISO rules on Secondary Arc Identifiers, as laid out in Rec. ITU-T | ISO/IEC 9834-1 Procedures for Registration Authorities, section 6.2.2, apply:

  • identifiers of an arc are required to commence with a lowercase letter, and to contain only letters, digits, and hyphens.
  • the last characters shall not be a hyphen
  • there shall be no two consecutive hyphens in the name

Example

nl

category

The type/category of the OID; enumeration, values see value set OIDcategories.

There are actually two main types of OIDs: leafs (id of an object), and nodes representing an ontological branch.

The types of node OID may be

  • a registration authority (RA) or
  • a structure for the management of OIDs.

The proposal for sub categories of leaf OIDs are

  • identifiers of an instance of an object (for example a person)
  • namespace identifiers (for example code systems, value sets)

status

Status of the OID. This is an enumeration, for values see value set OIDstatusCodes

creationDate

The creationDate is used to describe when the OID was first registered. It is not the date when the OID description is submitted to the OID repository. The creationDate, once set, never changes.

realm

In some cases OIDs may apply to a specific county/realm only, e.g. the namespace identifiers for the US Social Security Number (SSN) or the Dutch Citizen Service Number (BSN) or the codes system representing ICD-10 International Classification of Diseases 10th Revision for the use in Germany only (ICD10gm). This can be indicated by realm which is either the code of country or "UV" for universal. For values see code system CountryCodes.

description

This element contains a free text description of the OID ("what is the OID?"). The text typically contains an explanation but also can contain:

  • explicit versioning aspects
  • licensing information
  • Intellectual Property rights information
  • trademarks.

This element is repeatable for each language.

The datatype ED allows for a thumbnail child element. A thumbnail may be populated describing a short description of the OID (sometimes referred to as identifier name).

Example:

<description language="en-US" value="this is plain text as a long description">
   <thumbnail value="short text"/>
</description>

Associations

Association Description Class Card Conf
registrationAuthority Registration Authority RegistrationAuthority 1..1 required
responsibleAuthority Responsible Authority ResponsibleAuthority 1..* required
submittingAuthority Submitting Authority SubmittingAuthority 0..1 optional
additionalProperty Additional Properties AdditionalProperty 0..* optional
historyAnnotation History Annotations HistoryAnnotation 0..* optional
reference References Reference 0..* optional

RegistrationAuthority

Oid-RegistrationAuthority.jpg

This class represents the Registration Authority (RA).

Attributes

Attribute Description DT Card Conf Length
code RA role code CS 1..1 mandatory -

code

The code holds information about the role type of the RA. Valid codes are listed in RoleCodes.

Associations

Association Description Class Card Conf
scopingOrganization Scoping organization Organization 1..1 mandatory
person Contact person(s) Person 0..1 optional

ResponsibleAuthority

This is a class representing the (managing) authority that is responsible for the object that is identified by the OID (not for the OID itself).

Oid-ResponsibleAuthority.jpg

Attributes

Attribute Description DT Card Conf Length
code role code CS 1..1 mandatory -
statusCode status code CS 1..1 mandatory -
validTime validity time IVL_TS 1..* mandatory -

code

The code holds information about the role type of the ResponsibleAuthority. Valid codes are listed in RoleCodes.

statusCode

The statusCode holds information about the status of the ResponsibleAuthority. Valid codes are listed in RoleStatus.

validTime

This is an interval of time, representing the period when the ResponsibleAuthority is/was responsible for the object that is identified by the OID. If the ResponsibleAuthority is still responsible, only validTime.low is populated.

Associations

Association Description Class Card Conf
scopingOrganization Scoping organization Organization 1..1 mandatory
person Contact person(s) Person 0..1 optional

SubmittingAuthority

This is a class representing the submitting authority that originally asked for a new OID.

Oid-SubmittingAuthority.jpg

(Please note: to avoid redundancy, the classes Organization and Peron are shown with attributes here, at all other places only a "shadow" class of these two classes is shown)

Attributes

Attribute Description DT Card Conf Length
code role code CS 1..1 mandatory -
applicationDate date of application TS 0..1 optional -

code

The code holds information about the role type of the submitting authority. Valid codes are listed in RoleCodes.

applicationDate

Date of application (submission or certified submission) of the requested OID.

Associations

Association Description Class Card Conf
scopingOrganization Scoping organization Organization 1..1 mandatory
person Contact person(s) Person 1..1 mandatory

HistoryAnnotation

This class reflects historical annotations of the OID and records the changes of any data over time.

Oid-HistoryAnnotation.jpg

Attributes

Attribute Description Datatype Cardinality Conformance Recommended Length
annotationDate date annotation was created TS 0..1 required -
text annotation ED 1..1 mandatory -

Reference

Oid-Reference.jpg

This class provides a link to

  • other data sources, code tables, value sets, descriptions etc; typically this is a URL and always points to an object with different semantics than the OID itself.
  • other OIDs (within or outside this OID registry) in order to be able to express that an OID has been superseded/replaced or that there is a preferred OID.

Attributes

Attribute Description DT Card Conf Length
ref reference URI URI 1..1 mandatory -
type type of reference CS 1..1 mandatory -
lastVisitedDate date URI last visited TS 0..1 optional -

ref

The referenced URI.

type

The nature of the reference is coded in the type attribute, for vocabulary see ReferenceType.

lastVisitedDate

Specifies the date the UIR was last visited.

AdditionalProperty

Oid-AdditionalProperty.jpg

This class reflects additional properties of an OID that might be used to fit business rules that cannot (or should not) be standardized. This includes:

  • additional categories
  • additional status information
  • tags, simple text
  • coded properties

It is made of

  • attribute, describing the type of the additional property
  • value, the value of the additional property.
Attribute Description DT Card Conf Length
attribute Additional property type ST.NT 1..1 mandatory -
value Additional property value ST.NT 1..1 mandatory -

Person

A class to hold the properties of a person.

Oid-Person.jpg

Attributes

Attribute Description DT Card Conf Length
name person's name EN.PN 1..* mandatory -
addr person's address AD 0..* optional -
telecom person's telecommunication contact TEL 0..* optional -

Organization

A class to hold the properties of an organization.

Oid-Organization.jpg

Attributes

Attribute Description DT Card Conf Length
id id (OID) of the organization ST.OID 0..* optional -
name name of the organization EN.ON 1..* mandatory -
addr address of the organization AD 0..* optional -
telecom telecommunication contact of the organization TEL 0..* optional -
  1. Recommendation ITU-T X.680 (2008) | ISO/IEC 8824-1: 2008, Information Technology – Abstract Syntax Notation One (ASN.1), Specification of Basic Notation, 1997
  2. Recommendation ITU-T X.667 | ISO/IEC 9834-8: Information technology – Open Systems Interconnection – Procedures for the operation of OSI Registration Authorities: Generation and registration of Universally Unique Identifiers (UUIDs) and their use as ASN.1 object identifier components
  3. http://www.oid-info.com/faq.htm#iri