OPACHoldings Tutorial

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OPAC/Holdings Tutorial

• Rolande St-Gelais
• DRA Information
• Stockholm, August 10, 1999

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What is OPAC/Holdings ?

• A proposed, unique, agreed-upon method to
• request
• retrieve
• exchange
• holdings and circulation information between
  implementations

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Ultimate Goals

• INTEROPERABILITY
• CONSISTENCY
• (IC)

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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

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Background (cont..)

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

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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
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O/H Components

• 1) Form O/H Retrieval Mechanism
• 2) Content O/H Schema
• 3) Outcome O/H Profile

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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-b
nc.ca/iso/z3950/holds4.htm
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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

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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/draz39
50.htmlZIG
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O/H Schema (cont.)
Collaborators Participants

• DRA
• NLC-BNC
• FCLA
• LC

• DanZIG
• Stowe Computing
• GEAC

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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
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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

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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.)

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OPAC/Holdings Tutorial

• Q A