A centre of expertise in digital information management UKOLN is supported by: NISO MI TG2: Collection Description Status Report NISO MI Meeting, Research Triangle Park, NC, USA Wednesday 23 March 2005 – Thursday 24 March 2005 Pete Johnston Research Officer, UKOLN

A centre of expertise in digital information management Collections and Services Collection –An aggregation of one or more items Service –The provision of, or system of supplying, one or more functions of interest to an end-user or software application. –Physical or digital –Digital services may be "structured" or "unstructured" Informational services –Services that provide access to (the items within) a collection

A centre of expertise in digital information management Relations between Collections and Services Relationships exist –Between collections and (informational) services –Between collections In NISO MI conceptual model –A collection is-made-available-by zero or more services –A service makes-available exactly one collection –A collection is-part-of zero or more (super-) collections (parent) –A collection has-parts zero or more (sub-) collections (child)

Collection is-Part-Of Collection is-Part-Of Service is-Made- Available-By Service is-Made- Available-By Service is-Made- Available-By Collection is-Part-Of Collection is-Part-Of Service is-Made- Available-By

A centre of expertise in digital information management Functional Requirements Allow an agent to –Discover collections of potential interest –Identify a collection –Select one or more collections from amongst a number of discovered collections –Identify the informational services that provide access to the collection –Select a service with which to interact –Interact with service Subject to "knowledge" of interface semantics Collection description Service description

A centre of expertise in digital information management Collection Description TG2 decision to build on Dublin Core Collection Description Application Profile (DC CD AP) –Activity of DCMI Collection Description WG A "core" set of collection description properties –For simple collection-level descriptions –Suitable for a broad range of collections –Primarily to support discovery of collections Building on RSLP data model & schema –examine collection attributes (only) of RSLP CD Schema as starting point –excludes Location, Service, Agent description

Item Collection is-gathered-into m n Location is-located-in m n Service is-Made-Available-By m 1 m provides n administers n m Agent collects m n owns m n Collection Description is-described-by 1 m

A centre of expertise in digital information management DC CD AP: Progress Report Data model –extend Heaney E-R model to cover Service Specify collection attributes –starting from RSLP CD Schema –but excludes Location, Service, Agent description Specify terms (properties/classes) required –conform to DCMI Abstract Model –references some existing terms, requires some new terms Assign URIs for new properties/classes –proposals to DCMI Usage Board –non-DCMI naming authority for some new terms? Define bindings –use DCMI recommendations

A centre of expertise in digital information management NISO MI CD Schema & DC CD AP DC CD AP still work in progress –data model: (Location/Service) –Abstract Model: one-to-one rule –Some proposed terms still to be assigned URIs Scope and specificity of DC CD AP v NISO MI CD Schema –NISO MI addressing (primarily) library service providers –Some library-specific requirements e.g. completeness of collection –NISO MI CD Schema as superset of DC CD AP –NISO MI CD as second (similar) DCAP

A centre of expertise in digital information management UKOLN is supported by: NISO MI TG2: Collection Description Status Report NISO MI Meeting, Research Triangle Park, NC, USA Wednesday 23 March 2005 – Thursday 24 March 2005 Pete Johnston Research Officer, UKOLN