Metadata and OAI DLESE OAI Workshop April 29-30, 2002 Katy Ginger Presentation available at:

DLESE OAI April 29-30, Presentation Topics Architectures DLESE Architecture NSDL Architecture: View 1 NSDL Architecture: View 2 NSDL Metadata Overview NSDL Metadata Repository Formats Harvest into NSDL Metadata Repository NSDL’s Metadata Repository NSDL Item Metadata NSDL Collection Metadata Metadata and OAI Methods for Transporting Metadata Records via OAI DLESE OAI Software DLESE as Service Provider Discovery in DLESE with Harvested DLESE-IMS Records DLESE as Data Provider DLESE-IMS Metadata Collection Developers as Data Providers to NSDL Crosswalks to Dublin Core Acronyms in this Presentation Open Discussion

DLESE OAI April 29-30, DLESE Architecture Metadata Repository Collections DLESE Portal Search & Discovery Direct Entry OAI Resources Services: (e.g. What’s New) NSDL OAI Library Users

DLESE OAI April 29-30, NSDL Architecture: View 1 Metadata Repository Collections Library Portals Search & Discovery Service Library Users Gathering Direct Entry OAI Drawings based on Cornell JCDL article Resources

DLESE OAI April 29-30, NSDL Architecture: View 2 ADEPT Collection Registry Local Collection with ADEPT Middleware The local collections can “talk” to each other using ADEPT middleware.

DLESE OAI April 29-30, NSDL Metadata Repository Formats NSDL native metadata: Dublin Core Dublin Core + Ed LTSC (IMS) ADL (SCORM) MARC CSDGM (FGDC) GILS EAD Normalized metadata: qualified Dublin Core + audience Metadata Repository Stores native & normalized metadata in XML

DLESE OAI April 29-30, Harvest into NSDL Metadata Repository Metadata Repository Front Porch crosswalk, preprocess as necessary AdminGather WWW Item Metadata Collection Metadata OAI FTP https http Drawings based on Cornell JCDL article Collection Metadata Item Metadata

DLESE OAI April 29-30, NSDL’s Metadata Repository Collection Metadata Metadata Repository Link Metadata Item Metadata Collection Item: individual objects Collection: static, editorially managed aggregation Link/Aggregation: relationship records (collection/item collection/collection) Drawings based on Cornell JCDL article

DLESE OAI April 29-30, NSDL Item Metadata See Handout: Quick Table of NSDL Metadata Elements Normalized: Provide qualified DC content Example of Qualified DC.Format: DC.Format.Extent: 123,456 bytes DC.Format.Medium: text/html

DLESE OAI April 29-30, NSDL Collection Metadata See Handout: NSDL Collection Record Submission Form Submit directly Unqualified Dublin Core

DLESE OAI April 29-30, Methods for Transporting Metadata Records via OAI OAI-namespace Registered: Uses unqualified DC as the metadata format Metadata uses XML schemas (the OAI DC one) Namespace identifier registered with OAI Non-registered: Use any metadata format Metadata uses XML schemas (comment out DTD lines or don’t make validation references) No OAI registration, but maybe registration with potential trading partners like DLESE

DLESE OAI April 29-30, DLESE OAI Software Transports metadata records in Unqualified DC format DLESE-IMS format Any metadata format Available on SourceForge as version 1.2 Uses OAI Protocol version 1.1

DLESE OAI April 29-30, DLESE As Service Provider DLESE-IMS: Harvest and discover now Simple DC: Harvest now; discover in late Fall 2002 Advantages of being harvested by DLESE: Allows collections to be discoverable without the collection provider having to create a local discovery system

DLESE OAI April 29-30, Discovery in DLESE with Harvested DLESE-IMS Records As a recognized (branded) collection: Follows DLESE Collection Accession Policy Additional search capabilities (by icon brand) As individual records: (no icon brand): Records are not part of a recognized collection Still register collection name & label with DLESE Collection must meet DLESE Scope Policy

DLESE OAI April 29-30, DLESE as Data Provider DLESE-IMS: Being provided now Simple DC: Begin providing by fall 2002 perhaps summer 2002

DLESE OAI April 29-30, DLESE-IMS Metadata Metadata record at: (see handout) xml xml Required metadata: (see handout) Can use the DCS (DLESE Catalog System) to create DLESE-IMS metadata records

DLESE OAI April 29-30, Collection Developers as Data Providers to NSDL Use DLESE OAI software v. 1.2 (uses OAI Protocol v. 1.1) NSDL will be using OAI Protocol v. 2.0 June 1 DLESE OAI software will be upgraded August 2002 to use OAI Protocol v. 2.0 Contact to set a harvest schedule: NSDL: Susan Jesuroga DLESE: John Weatherly

DLESE OAI April 29-30, Crosswalks to Dublin Core DLESE: Crosswalk for DLESE-IMS to DC is under development using XSLT NSDL: will help collection groups crosswalk their metadata to DC You: Best if you map/crosswalk your own and we can discuss that now

DLESE OAI April 29-30, Open Discussion Topics OAI questions DLESE-IMS Dublin Core Crosswalks and XSLT Controlled vocabularies NSDL questions

DLESE OAI April 29-30, Acronyms in this Presentation DLESE: Digital Library for Earth System Education OAI: Open Archives Initiative LTSC (IMS): Global Learning Consortium (IMS) and the IEEE Learning Technology Standards Committee IEEE: Institute of Electrical and Electronics Engineers, Inc. Committee, Learning Object Metadata ADL (SCORM): Advanced Distributed Learning (Sharable Content Objects Reference Model) MARC: Machine Readable Cataloging GILS: Global Information Locator Service EAD: Encoded Archival Description XML: eXentsible Markup Language DC: Dublin Core NSDL: National Science Digital Library ADEPT: Alexandria Digital Earth Prototype DTD: Document Type Definition CSDGM (FGDC): Content Standard for Digital Geospatial Metadata (Federal Geographic Data Committee) JCDL: Joint Conference on Digital Libraries