Data element classification iso iec 11179 part 2
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Data Element Classification ISO/IEC 11179, Part 2. Bruce Bargmeyer U.S. Environmental Protection Agency Tel: (202) 260-5306 Internet: bargmeyer.bruce@epa.gov WWW: http://sdct-sunsrv1.ncsl.nist.gov/~bargmeye. Data Elements-Fundamentals. Object Class. Property. Representation.

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Data element classification iso iec 11179 part 2 l.jpg
Data Element Classification ISO/IEC 11179, Part 2

Bruce Bargmeyer

U.S. Environmental Protection Agency

Tel: (202) 260-5306

Internet: bargmeyer.bruce@epa.gov

WWW: http://sdct-sunsrv1.ncsl.nist.gov/~bargmeye


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Data Elements-Fundamentals

Object

Class

Property

Representation

Data

Element

Concept

Data

Element

Core

Data

Element

Application

Data

Element


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Data Elements-Fundamentals

Object

Class

Property

Representation

Data

Element

Concept

Conceptual

Domain

Data Value

Domain

Data

Element

Core

Data

Element

Application

Data

Element


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Classification -Fundamental Notions

  • What forms can classification take?

    • Keywords

    • Controlled Word lists, possibly based on models

    • Thesaurus

    • Taxonomy

    • Ontology

      • Acyclic directed graph, lattice

      • Multiple inheritance


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SC

NC

GA

VA

MD

OH

…………

Definition

Steward

Unique ID

Classification

Registration

Authority

Name and Context

Maintenance

Organization

Others …..

Data Element Classification


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Classification -Fundamental Notions

  • Each node in a classification structure is a taxon (plural: taxa).

    • The taxa relating to a data element can be listed in a separate attribute of a data element

    • With adequate software, users could access and navigate the classification structure

    • A nonintelligent identifier for each taxon helps to deal with change


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Example Classification Scheme

  • Library of Congress keywords

  • General European Multilingual Thesaurus (GEMET)

  • Integrated Taxonomic Information System (ITIS) - biological

  • Bill Kenworthey’s taxonomy of common abstract unit nouns


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Utility of Data Element Classification

  • Help to locate one data element among many (thousands)

  • Help to design similar data elements in uniform manner

  • Help to resolve synonym and homonym problems

  • Provide context not possible to put into a definition

  • May provide definitions for words found in data element definitions and names


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Status

  • ANSI & ISO

    • Final Draft IS going out for JTC1 ballot

  • Continuing R&D

    • Concept is evolving

      • Search engines

      • Middleware - agents, mediators, request brokers

      • XML tags

    • Relationship to terminology management