NUKAT, Warsaw 23 January 2008 Chris Thewlis (& Janifer Gatenby) OCLC Regional Council Canberra 15 th April 2010 SRU record update and its implementations in Australia

SRU Record Update An Overview

Introduction to SRU Record Update What it is: - A Push update mechanism, designed for union catalogues CatalogueCatalogue MirrorOPACMirrorOPAC Push DocumentsDocumentsRepositoryRepository OAIPMHPull CatalogueCatalogueUnioncatalogueUnioncatalogue SRU Update Push

Traditional update mechanisms Proprietary mechanism – suitable for private one off agreements only OAI PMH & FTP Suited for batch loading OAI PMH is used where the data source exposes the metadata to be harvested for discovery purposes Where the data source does not expect the data to be changed by the harvesting site or does not care Hence one way – no mechanism for response or future synchronisation Relies on regular manual treatment of batches at both ends and results in delays, gaps, less reliable alignment of identifiers

Why SRU record update? Requirement for immediate availability of records Scalability; no scheduling & batch maintenance Two databases are not identical e.g. A union catalogue is not a slave of the contributing catalogues Requirement for interactive feedback – alignment, enrichment Identifier of the record in the target database Inter-record links – name and subject authorities, classification, FRBR work record etc. Diagnostics – diffused error resolution Warnings Errors

SRU record update : Near Real Time Inserts, updates, deletions Machine & QA corrections and merges Identifiers and diagnostics Inserts, updates and deletions Both CBS and WorldCat have an SRU Pusher and an SRU catcher Identifiers and diagnostics

Implementations of SRU record update Dutch union catalogue updating WorldCat (CBS) Libraries Australia updating WorldCat (CBS) DNB Zeitschriftendatenbank (ZDB, Germany) updated by local systems OCLC Library registry (catcher) ABES (Star – online dissertations, Calames – manuscripts) WorldCat catcher and pusher And in the wings to update WorldCat HeBIS ABES UnityUK GBV SwissBib ++ OLIB libraries

Consistency checker Coordinated generation of tables Contents: Local identifier, ANBD id, Holdings symbols (Libraries Australia) EPN, PPN, Holdings symbols (GGC) ANDB id or PPN, OCN, Holdings symbols (WorldCat) Run at regular intervals Remedial action automated in obvious cases ILS WorldCat

Libraries Australia And SRU Record Update

Libraries Australia and WorldCat blogs Repositories, various sites

ILS Batch loading ILS SRU record update WorldCat

SRU Record Update Statistics CommencedRecords new to WorldCat HoldingsMerge %Changes ,8542,850, %c.30,000 /mth ,7411,130, %Not yet CommencedReplacesDeletesEnrich % ,000 + / week1,000+ / week60% To start in May 2010 CBS to WorldCat CBS from WorldCat

Amlib and Libraries Australia

LMS Developed in Australia One of 4 LMS’s owned by OCLC 400 libraries Currently developing two-way SRU update CBS (Libraries Australia) Touchpoint (OCLC locally deployed Discovery system) Hoping to test in the next 2-3 months Helps to proved concept Chance to review workflows

SRU Record Update Evolution SRU from WorldCat to Libraries Australia Q Corrections and enrichments Bibliographic and holdings for libraries which catalogue directly in WorldCat using Connexion Wish list: More data exchanged in real time with WorldCat Detailed holdings Authority records (VIAF and ISNI) Synchronisation Gateway

Near Real Time Update for All Systems

Other systems need to move away from batch too

ILS Batch loading ILS SRU record update WorldCat

Synchronisation Gateway Widget Library System Z39.50Client SQLQuery OAIPMHILSAPI LocalScripts SRU update Detect / Elicit Send Tailor SRUSRU

Synchronization Gateway A new solution: The Synchronization Gateway A middleware widget that is installed on a local PC Queries the local database via multiple protocols Elicits records via multiple protocols Pushes data to CBS or WorldCat via a single protocol (SRU)

Nearly as good solution One way only Bibliographic records and holdings May not be able to detect deletions Will employ consistency checker to handle deletions Machine readable reports of ANBD identifiers / local identifiers are returned The Synchronisation Gateway does not update

Synchronisation Gateway and Libraries Australia Proof of concept testing successful with UNSW and UNILINC using: SRU enquiry for detection and eliciting SRU record update for loading to Libraries’ Australia CBS test database Planning other testing with Libraries Australia Parallel testing with WorldCat catcher

Conclusion Ensures holdings are up to date [hour/second] on target catalogue/s Ensures holdings are accurate and complete Eliminates batch preparation and monitoring More flexibility for services Australian libraries can deploy services on their own ILS, on Libraries Australia and on WorldCat Better exposure of library materials