IRDI

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eCl@ss uses globally unique identifiers for every object included in the eCl@ss standard. This IRDI (International Registration Data Identifier) is based on the international standards ISO/IEC 11179-6, ISO 29002 and ISO 6532. It consists of several parts:

  • an International Code Designator (ICD) according to ISO 6523, followed by an Organization Identifier (OI) that globlly identifies eCl@ss as the publishing organization (eCl@ss: 0173, other registered organizations include ISO (0112), ODETTE (0177), SIEMENS (0175), GTIN (0160))
  • XML Schema 2.0 (Release 8.0ff) is here.


Below the Code space Identifiers (CSIs) used in eCl@ss XML:

CSI
Category of administered item
Used in eCl@ss XML
CT
concept type
-
TM
term
-
DF
definition
-
IM
image
-
AB
abbreviation
-
GS
graphical symbol
-
TS
textual symbol
-
LG
language
-
OG
organization
-
01
class
YES
02
property
YES
05
unit of measure
YES
07
property value
YES
08
currency
-
09
data type
YES
11
ontology
YES
Z2
aspect of conversion
YES
Z3
template
YES
Z4
quantity
YES
                                  Table 1 – Code Space Identifier According To ISO 29002-5 (Restricted)
  • a Concept Code (6-digit identifier, e.g. AAA123)
  • a Version identifier (e.g. 001 for the first version of an object)


IRDI.jpg


The ISO/IEC 6523 Registration Authority used to be the British Standards Institute (BSI) and has been the ISO/IEC JTC 1/SC 32 secretariat (under the auspices of the American National Standards Institution, ANSI) since March 2011.


[edit] Company Specific Identifiers

Certain ranges of (6 digit) identifiers (i.e. the concept code) are blocked for company-specific use:

  • concept codes starting with X are blocked for user-specific structural elements
  • concept codes starting with Y are blocked for manufacturer-specific structural elements
  • concept codes starting with Z are blocked for eCl@ss-internal structural elements and shall not be used by eCl@ss users

eCl@ss will not use identifiers starting with X or Y. This guarantees that these company-specific structural elements will not be replaced by eCl@ss elements. Apart from the blocked concept codes, a company may simply use a different ICD, so that all concepot codes can be used, but they are distinct with the help of an ICD that is not 0173 (for eCl@ss).


[edit] References

- Wikipedia

- Cyber Identity Website

- ISO/IEC JTC 1/SC 32 secretariat

- ANSI

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