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OPAC/Holdings Tutorial

OPAC/Holdings Tutorial. Rolande St-Gelais DRA Information Stockholm, August 10, 1999. What is OPAC/Holdings ?. A proposed, unique, agreed-upon method to: request retrieve & exchange holdings and circulation information between implementations. Ultimate Goals. INTEROPERABILITY +

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OPAC/Holdings Tutorial

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  1. OPAC/Holdings Tutorial Rolande St-Gelais DRA Information Stockholm, August 10, 1999

  2. What is OPAC/Holdings ? A proposed, unique, agreed-upon method to: • request • retrieve & • exchange holdings and circulation information between implementations

  3. Ultimate Goals INTEROPERABILITY + CONSISTENCY (IC)

  4. Background • Started out in 1997 • Original needs: • retrieve location and copy information • retrieve summary and detailed holdings • obtain related circulation info • obtain lending policies, reservation info

  5. Background (cont..) • Issues: • Multiple implemented ways to request/retrieve holdings • Bib records • 852/9xx fields • MARC holdings records • Version-1 OPAC, Unimarc, etc.

  6. Background (cont..) • Issues: • Multiple data formats, different levels of details • Missing information from existing formats (MFHL and OPAC-1) • Conclusion: • New OPAC/Holdings Schema using GRS-1 FOR MORE INFO... MFHL: MARC for Holdings and Locations

  7. O/H Components 1) Form: O/H Retrieval Mechanism 2) Content: O/H Schema 3) Outcome: O/H Profile

  8. O/H Retrieval Mechanism • Specifies how to ask for and retrieve holdings from any system • Promotes one unique retrieval mechanism • Makes use of GRS-1 and O/H Schema FOR MORE INFO... See “The Copenhagen Proposal” at: http://www.nlc-bnc.ca/iso/z3950/holds4.htm

  9. O/H Schema • Generic definition of a ‘holdings record’ • Provides for record segmentation • Provides for holdings data indirection • Includes several holdings reporting levels • Each level defines extent of information required

  10. O/H Schema (cont.) Key Concepts Site : Unique physical location within an institution Copy : Copy of a bibliographic item Bib unit : Distinct portion of a bib item Phys.unit : Part of a bib unit Piece : Circulating item FOR MORE INFO... See “O/H Schema: Definitions & Examples (Draft 4)” at : http://www.dra.com/resources/z3950/draz3950.html#ZIG

  11. DRA NLC-BNC FCLA LC DanZIG Stowe Computing GEAC O/H Schema (cont.) Collaborators & Participants

  12. O/H Profile • Working paper for implementors • Defines behavior of origins and targets implementing the ZIG OPAC/Holdings Retrieval Mechanism and Schema • To be completed FOR MORE INFO... http://www.nlc-bnc.ca/iso/z3950/holds6.htm

  13. Current O/H related work • O/H Schema Draft-4 out for final review (July 99) • Definition of an O/H tagset • Proposed espec-q: Ability to filter holdings data upon retrieval • Holdings attribute set: Ability to search directly on holdings data

  14. In Summary... Still work to do, but... • Interoperability & consistency will outweigh by far the cost of our efforts • We will have strong basis for growth (ILL, Circulation, Database Update, etc.)

  15. OPAC/Holdings Tutorial Q & A

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