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ALEPH 500 Union Catalogue Overview

ALEPH 500 Union Catalogue Overview. Judy Levi Senior Product Analyst Ex Libris Ltd. judy.levi@exlibris.co.il. November 2004. Session Overview. Union Catalogue Model OPAC views Union Catalogue Construction Load Equivalency Merge Union Catalogue and Universal Borrowing.

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ALEPH 500 Union Catalogue Overview

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  1. ALEPH 500Union CatalogueOverview Judy Levi Senior Product Analyst Ex Libris Ltd. judy.levi@exlibris.co.il November 2004

  2. Session Overview • Union Catalogue Model • OPAC views • Union Catalogue Construction • Load • Equivalency • Merge • Union Catalogue and Universal Borrowing

  3. Union Catalogue Model • A Union Catalogue is the physical union of multiple individual library catalogs. • The ALEPH Union Catalogue principles are • the source records can originate from any library system (ALEPH or non-ALEPH) • the original source record from each contributing library is retained

  4. ALEPH Union Catalogue • Each record has embedded holdings • Each record contains a link to the source record • There is real time display of circulation status

  5. Union Catalogue – OPAC view Let me show you

  6. Union Catalogue – OPAC view • A separate bibliographic record from each contributing institution • Records contain local notes and embedded holdings • Records are displayed as a single record (de-duplicated and merged) • There is real time access to circulation status, via z39.50 or an ALEPH api

  7. Union Catalogue – OPAC Search • FIND • BROWSE

  8. Union Catalogue – Building • Each contributing institution sends its new, updated or deleted records to the Union Catalogue. • The records are loaded to the the Union Catalogue. • Records are analyzed for equivalency (de-duplication)

  9. Union Catalogue Construction C Merge Equivalence Table (Z120) B Create Equivalence ALEPH Union Catalogue “Just in Time” A Import Load / Catalogue New/Update/Delete Indices Original Records Contributors

  10. Union Catalogue [A] Load • Records are stored as separate entities in the database. • When loaded, an identifier to the external source record is added to the record, for simple updating and navigation to the external resource record. • Indices are created using the standard ALEPH indexing services.

  11. Union Catalogue [B] Equivalency • An equivalence record links each bibliographic record to its equivalent records. • ALEPH uses a sophisticated algorithm that was developed in conjunction with the California Digital Library (Melvyl) to identify duplicate (i.e. equivalent) records.

  12. Union Catalogue [C] Merge • Result set from FIND is de-duplicated to contain only one record per group of equivalent records. • The Browse counter of the number of relevant records counts only one record per group of equivalent records. • User View uses on-the-fly Merge to present a single record that is built from a group of equivalent records.

  13. Universal Borrowing • Universal Borrowing, at its fullest extent, is the ability to request, borrow and return material anywhere in a group of libraries that have banded together as a consortium.

  14. Universal Borrowing • It should be possible to fulfill the request as an Interlibrary Loan (i.e. a loan between libraries), or directly to the end-user (Direct Consortial Borrowing). • Libraries running disparate library software systems must be able to ‘speak’ to each other, through standard protocols (ISO 10160 for ILL, and NCIP for DCB.)

  15. Universal Borrowing in ALEPH • Stage I: • Based on a requesting mechanism in the Union Catalogue. • Handling between ALEPH libraries only. • Stage II: • Ability to handle walk-in patrons, with no need to place a prior request. • Ability to ‘speak’ between ALEPH and non-ALEPH systems.

  16. Universal Borrowing in ALEPH • User logs into the Union Catalogue, stating which is his home library. • User places title- or volume-level request. • User inputs requested pickup location.

  17. Universal Borrowing in ALEPH • Depending on the pickup location, the Universal Borrowing system identifies the best library for supply. • The system checks whether a copy is available at the “best library”; if not, the system continues down the list of suppliers. • The system sends a “create request” message to the owning library; the message contains user data.

  18. Universal Borrowing in ALEPH • The owning library fetches material, and sends it to the pickup site (transfer status). • The pickup site informs user that material is waiting. • The material is loaned to user at the pickup site; the loan transaction is performed at the owning library.

  19. Universal Borrowing in ALEPH • The user can return the material to any library in the consortium. • The operator at point of return identifies the owning library and performs “return”. • The material is discharged from user, and becomes “In Transit” status.

  20. Thank You

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