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Metadata Frameworks

Metadata Frameworks. Fall 2003. Metadata Frameworks. ADN - for online/offline resources ** DLESE-IMS - for online resources Annotation - resource reviews, comments ** Collection - collection characteristics ** News-Opps - announcements

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Metadata Frameworks

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  1. Metadata Frameworks Fall 2003

  2. Metadata Frameworks • ADN - for online/offline resources ** • DLESE-IMS - for online resources • Annotation - resource reviews, comments ** • Collection - collection characteristics ** • News-Opps - announcements **Design - Venetian Blind with chameleon namespaces Overall Challenge - Jan 2004 metadata workshop - whole ball of wax per Mike Mayhew

  3. ADN records • Web-based resources where resources are: • Modules, lesson plans, activities, etc. • Datasets (remote sensed, in-situ, model) • Guides, text, visuals, imagery, etc. • Strong data-typing with enforced required fields • Has educational, technical, geospatial, temporal, relations, right, cataloger, creator, general categories Challenge - no direct meta generation support

  4. DLESE-IMS records • No data-typing; • Required metadata not enforced • Same ADN categories just less info in each category • Geospatial and temporal are completely different than ADN (causes problem records for ADN) • Has metadata generation support

  5. Annotation records • Are the gatekeeper to the Reviewed Collection • Are the gatekeeper as to whether library users can read or contribute reviews • Can exist without ADN records • Only 1 annotation type per record • Annotations are in the record or a URL sends library user to a new site for the annotation • Strong data-typing with enforced required fields Challenge - no direct meta generation support

  6. Collection records (1) • Overall collection characteristics (title, descr.) • Contains DPC collection key and metadata format (how to track collections through DPC) • Indicates how a collection arrives at the DPC • Is the collection OAI harvestable & the OAI info • Is the collection generated at the DPC • Is the collection emailed, ftp’ed or what • Moderate data-typing with enforced required metadata

  7. Collection records (2) • Indicates if/how collections can be redistributed • Info about item-level catalog record #’s • Indicates super/sub/associated collections • Can indicate ADL buckets for a collection • Captures the additional info needed for NSDL • Tracks accessioning and alignment with DLESE collection policies per requirement of the Collections Accessioning Taskforce

  8. Collection records (3) Challenge - not sure if framework has all needed information Challenge - to produce valid records requires both DPC staff and a collection builder to create record Challenge - need to incorporate into other DLESE systems (DDS, histograms, OAI) Challenge - no metadata generation support

  9. News and Opps • Allows for different announcement like grants, conf. wrkshps, interns. and start/stop, post/archive dates (non-standard) • Has metadata generation support • No vocabs or data typing except in GUI • No longer valid records • Mixes presentation with data (html, special chars issues) Challenge - per Karon, core services involvement; need better discovery and framework revamp?

  10. Dependencies and Versioning (1) • All frameworks are independent; even though some have same fields (good or bad???) • All controlled vocabularies are individual schemas so that they can be plugged into any framework (namespaces are hidden) • Collection, ADN & Anno are versioned in CVS

  11. Dependencies and Versioning (2) • Collection, ADN & Anno records validate at schema locations on the metadata website through their overarching wrapper schema • Metadata/adn-item/0.6.50/record.xsd • Metadata/collection/0.1.01/collection.xsd • Metadata/annotation/0.1.01/annotation.xsd • New framework versions are issued when • a tag is changed • a vocabulary is changed (add/delete) • or a new or modified field causes a structure change

  12. Dependencies and Versioning (3) Challenge - the schemas enforce *lots* so they have lost some plug-n-play & the records are less flexible in coping with change Challenge - if give up some enforcement, records are more flexible when changes occur but data is more suspect (this philosophy needs to work closely with a UI because the UI would have to pick up some of the data enforcement)--- Probably not good for ADN but worth high consideration for News & Opps.

  13. Current Coll Formats (20 with 14 in DDS)

  14. Future Coll Formats (15) (Oct-Dec 2003)

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