Metadata Registries Registry: authoritative, centrally controlled store of information – W3C Web Services Glossary, 2004

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Presentation transcript:

Metadata Registries Registry: authoritative, centrally controlled store of information – W3C Web Services Glossary,

Primary functions  Registering  Publishing  Managing  Data Storage  User Services via a Web Interface  Navigation  Searching  Browsing –M2M Services Querying Using an API to programmatically create, view, and modify contents –Crosslinking –Crosswalking –Schema translation And many more … …

Registry Types – Perspective 1 “Data Registries” = data standards “Metadata Registries” = metadata schemas Terminology Registries /Services = Knowledge Organization Systems (KOS) = encoding schemes = code sets = valid/permissible value lists Service Registries

Metadata Registries = registering metadata schemas

Metadata Registries Purpose: –to collect data related to metadata schemas Functions: –to store data elements include both semantics and representations –to provide the means to identify and refer to established schemas and application profiles to crosswalk and map among different schemas

Examples:  Cross-domain and cross-schema registries,  e.g., UKOLN’s SCHEMAS Registry  CORES Registry  JISC IE Metadata Schema Registry (IEMSR) project JISC IE Metadata Schema Registry (IEMSR)  Domain-specific, cross-schema registries,  e.g., UKOLN’s MEG (Metadata for Education Group) RegistryMEG (Metadata for Education Group) Registry  Australian Institute of Health and Welfare - Metadata Online Registry (METeOR) Australian Institute of Health and Welfare - Metadata Online Registry (METeOR)  Project-specific registries,  e.g. The European Library (TEL) metadata registry, whose purpose is recording all metadata activities associated with TEL  Standard-specific registries  e.g., DCMI Metadata Registry Metadata Registries

Registry Practice 1  Go to Cores Registry:  Explore:  Is a full MODS element set registered?  What elements from MODS are registered? By whom?  What elements are in the British Library Application Profile?  Is there any application profile available for postcards?  Is there an element ‘measurement’ in the registry?

Metadata Registries that Include Schemas and related Encoding Schemes

DCMI Open Metadata Registry

Open Metadata Registry Sets

Value Vocabularies Concepts in a value vocabulary

Registry Practice 2  Go to DCMI Registry at: vlet vlet  Choose your “Language Preference”  View ‘properties’ and explain why there are two ‘contributors’ in the registry.  Where is “hasVersion” defined? What is the namespace URI? What property does it refine?  What ‘encoding schemes’ have been registered there?  What is “IMT”? Can you find the value for jpeg 2000?

The LOV dataset contains the description of RDFS vocabularies or OWL ontologies defined for and used by datasets in the Linked Data Cloud. Upper & Meta Science Data & Systems Where & When MediaMarket Library City

Vocabularies included And a lot more …

About a vocabulary: Basic information; Relationship with others

Including many ontologies, e.g., Music Ontology (MO)