Rachel Heery

1
DESIRE metadata registry

• Rachel Heery
• UKOLN
• r.heery_at_ukoln.ac.uk
• http//www.ukoln.ac.uk

2
DESIRE focus on problem area

• Variety of metadata schemas in use
• need for mapping
• Several extensions of standard schemas in use
• addition of local elements
• rules for content

3
Methodology

• DESIRE registry based on
• relational database - mySQL
• web browser interface
• human readable only

4
Database structures

• DESIRE registry provides generic data model to
  accommodate
• Data elements
• Qualifiers
• Local elements
• Permitted values
• Definitions, inter-relations and mappings

5
Data Model

• Namespaces
• associated version, associated namespace concept
• Semantic layer
• Basic Semantic Registry, unique concepts,
  extensible
• Data elements
• units of schema associated with namespace
• Application profile
• data elements for particular local application
• Schemes
• associated with data elements within a schema
• can be enumerated list, rule set, value component

6
Application profiles

• Declares application specific schema
• Draws on existing namespaces
• Introduces no new data elements
• Can specify permitted schemes and values

7
Registered element sets

• Namespaces
• DC 1.0
• DC 1.1
• DC qualified (prototype)
• BIBLINK
• cld
• ROADS
• A-Core

• Application profiles
• BIBLINK core
• Simple collection level description
• ROADS Document template

8
Mappings

• Use of intermediate vocabulary
• Each schema mapped to intermediate interlingua
• Equivalence mapping at fine level of granularity
• Basic Semantic Registry

9
References

• DESIRE registry
• http//desire.ukoln.ac.uk/registry/
• Basic Semantic Registry
• http//www.iso.ch
• ISO 11179
• http//pueblo.lbl.gov/olken/X3L8/activities.html
• BIBLINKCore
• http//hosted.ukoln.ac.uk/biblink/wp8/fs/bc-semant
  ics.html
• Dublin Core
• http//mirrored.ukoln.ac.uk/dc/
• ROADS Templates
• http//www.ukoln.ac.uk/metadata/roads/templates/