1. eLib Concertation Day Collection Level Description 7th March 2000 Anne Gambles - London School of Economics Stephen Graham - London Business School

2. Hybrid Library Model Library Resources Library USERS HeadLine Discovery to Access Tools (electronic) Resource Full-Content HeadLine Personal Information Environment ‘meeting’ of Resource with User Resource Metadata User Metadata

3. Introduction Resource Data Model –Services and collections User Data Model –User status –Subject areas that they are interested in PIE Data Model –Interface creation The HeadLine schemata includes : –the “instances of availability” concept –the various “access type values” that services and resources can have.

4. Resource Data Model

5. Services Services entity: Metadata about the various services and products to which institutions subscribe and have access to. –Service entity: non-specific metadata about a service. –Service instance entity: metadata about a particular instance of a service, for example a cd-rom version, or a web-based version.

6. Resources “ Resources” have a ‘child’ relationship to the HeadLine “Services”. Resources entity: metadata about –a particular Journal –an FAQ list –Product Documentation

7. Instances of Availability Individual Resource entity: metadata which is general and non-specific to any instance of a resource. Resource Instance entity: metadata about a particular instance of a resource. A particular journal title may be available: in full-text (last five years), via a web based service as abstracts only (last ten years), on a cd-rom in hard copy (last twelve years), in the library depth + date range + medium

8. Access Restrictions Access Metadata is contained within the Service Instance Entity. –accesstype values: none ippermissioned ipgeneric generic individual

9. Access Restrictions Cont. –URI Fields: ippermissionedurl indpasswdurl genericpasswdurl nonrestrictedlinkurl

10. Conclusion HeadLine RDM: –an experimental data model –a complex relational schemata –resource discovery to resource access Implemented and tested using SQL Compliant with ANSI SQL/92 Portability testing: Postgres and Oracle

11. Further details are available on the HeadLine Website: http://www.headline.ac.uk/ HeadLine-Users (Mailbase mailing list): http://www.mailbase.ac.uk/lists/headline-users/ Anne Gambles: a.gambles@lse.ac.uk Stephen Graham: sgraham@london.edu Further Details