1. 11179-3 Edition 3 Metadata registry (MDR)
ISO/IEC JTC1/SC32/WG2 N1531R1
Edition 3 Metadata registry (MDR)
Ray Gates
May 12, 2011
09/12/2018

2. Agenda MDR Approach Changes in Edition 3 New in Edition 3
UML packages and Conformance
Changes to types of Metadata Items
Changes to Identification region
Changes to Designation & Definition region
Changes to Administration/Registration region
New in Edition 3
Concept Systems
Binary Relations
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3. MDR Approach Specification of a metamodel for registering metadata
Common facilities apply to all metadata types
Identification, Designation & Definition , Registration
Description of specific types of metadata
Data Description – Data Elements and Data Element Concepts, Conceptual and Value Domains
Concept Systems (new in Edition 3) and Classification Schemes
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4. UML Packages & Conformance
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5. Use of UML Packages in MDR
Edition 2 divided the metamodel into regions for descriptive purposes only
Edition 3 uses UML packages to represent regions of the metamodel
Shows dependencies between regions more clearly
Enables finer-grained conformance criteria to be specified
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6. MDR package dependencies
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7. Conformance levels
Conformance may be claimed for a set of data structures and/or datatypes for clauses:
clause 7 Identification, Designation and Definition
clause 9 Concepts
clause 10 Binary Relations
clause 11 Data Description .
Conformance may be claimed for a registry or for a registry software system for clauses:
clause 8 Registration
clause 12 Basic attributes.
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8. Types of metadata items
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9. Types of metadata items
Finer-grained typing of metadata
In Edition 2, every metadata item had to be recorded as an Administered Item
all items subclassed from Administered_Item
Edition 3 is more light-weight and supports selective typing
when recording an item in a registry, apply the desired typing, which can be changed over time
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10. Edition 2 Administered Items
In Edition 2, all specified metadata objects are
Explicitly subclassed from
Administered_Item.
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11. Edition 3 types of metadata items
Registered_Item is an abstract class. Only it’s subclasses can
be instantiated.
In Edition 3, the specified types are available to be applied to any metadata item , as desired.
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12. changes to identification region
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13. Single vs. Multiple Identifiers
Edition 2 allowed only a single identifier per metadata item
Edition 3 allows multiple identifiers per metadata item, and requires an associated namespace be specified for each identifier
Supporting multiple identifiers allows metadata items to be shared across registries that use different identification schemes
Edition 3 simplifies the structure of the identifier and supplements it with a Namespace
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14. Identification in Edition 2
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15. Identification in Edition 3
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16. Changes to Designation & definition region
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17. New for Designations and Definitions
Edition 2 allowed one Designation and one Definition to be specified as ‘preferred’
Edition 3 supports different Acceptability ratings to be specified in different contexts
preferred
admitted
deprecated
obsolete
superseded
Edition 3 supports recording Naming Conventions
Edition 3 renames ‘name’ to ‘sign’
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18. Edition 2 Designation & Definition
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19. Edition 3 Designation & Definition
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20. Changes to registration region
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21. Edition 2 Administration region
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22. Edition 3 Registration region
Should we associate Submission_Record with Identified_Item instead of Registered_Item?
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23. Concept systems
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24. Concept Systems overview (1)
Support for Concept Systems
using simple relations and/or complex assertions
with examples using
Simple Knowledge Organization System (SKOS)
Object Role Modelling (ORM)
Web Ontology Language (OWL)
Common Logic Interchange Format (CLIF)
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25. Concept Systems overview (2)
Concept System subsumes
Classification Scheme
Representation Class
All Concepts must have source Concept System, but it may simply the Registry
Concept systems can reference or import other concept systems
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26. Edition 3 Concept System
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27. Binary Relations
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