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XML-Based Schema Languages Why, How, When? Dr Hoylen Sue DSTC Pty Ltd Resource Discovery Unit Open...
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XML-Based Schema Languages Why, How, When? Dr Hoylen Sue DSTC Pty Ltd Resource Discovery Unit Open Forum on Metadata Registeries
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Overview zMetadata standards zThe big picture zDeploying metadata and schemas zMetadata tools zWhat we have done zThe issues we faced zW3C RDF efforts zThe future
Transcript of XML-Based Schema Languages Why, How, When? Dr Hoylen Sue DSTC Pty Ltd Resource Discovery Unit Open...
XML-BasedSchema LanguagesWhy, How, When?
Dr Hoylen SueDSTC Pty Ltd
Resource Discovery Unit
Open Forum on Metadata Registeries
The questions
Why?The need for schemas
How?Their use
When?The emerging standards
OverviewMetadata standards
The big pictureDeploying metadata and schemasMetadata tools
What we have doneThe issues we faced
W3C RDF effortsThe future
Metadata Standards
Semantic modelsHow the data is modeled
SyntaxHow the data is written down
Element setsWhat data is captured
Consensus
Semantic modelsYes
SyntaxYes
Element setsNo!
OverviewMetadata standards
The big pictureDeploying metadata and schemasMetadata tools
What we have doneThe issues we faced
W3C RDF effortsThe future
Deployment Goals
Software tools
InteroperabilitySemantic Interchange
Solutions to the unknownCustom developed software
ExpensiveLimits deployment
Generic configurable softwareFlexibleReuse
In the scheme of things
Generic standards + schemas =
full specification
SchemasMachine readable descriptionCaptures metadata information
elementsqualifiersschemesontologies and thesauriconstraints
OverviewMetadata standards
The big pictureDeploying metadata and schemasMetadata tools
What we have doneThe issues we faced
W3C RDF effortsThe future
Metadata Tools
Generation and editingRepositories or databasesSearch and processing
DSTC’s Metadata suiteEditors
Reg and ReggieRepositories
HotMetaSearch Interface
HotMeta and HotOIL
Metadata EditorsSchema basedSupports multiple metadata standards
Dublin Core ANZLIC GILS AGLS EdNA IMS GEM vCard ADMIN
http://metadata.net
Issues to be addressedInheritance and referencing
Derivative schemasLocal customizations of schemas
Site specific modificationsApplication specific items
GUI elements
OverviewMetadata standards
The big pictureDeploying metadata and schemasMetadata tools
What we have doneThe issues we faced
W3C RDF effortsThe future
Current W3C WorkResource Description Framework
(RDF)RDF Working groups
Model and SyntaxSchema
RDF schema working draftXML schema workOther proposals...
Current statusXML
Syntax standard definedSemantic smorgasbord
RDFModel and syntax stabilizingSchema still being developed
Communitiese.g. Dublin Core
Our future workAlignment with developing standardsAdvanced constraintsOntologiesInteroperability
Conclusion
How?Why?When?
http://metadata.net
http://www.dstc.edu.au/rdu
