http://www.talis.com/tdn/platform/reference/directorymodel Comments for "Directory Data Model" en http://www.talis.com/tdn/platform/reference/directorymodel <h1>Directory Data Model</h1> <p>This specification describes the data model used by the Talis Directory defined in terms of the types of entities being modelled, their relationships to one another and the properties they may have. The directory uses <a href="http://www.w3.org/RDF/">RDF</a> as a highly flexible data format capable of being rapidly evolved to encompass new entities and relationships. Each entity in the directory is represented by an RDF class and may have specialised versions for particular data types (for example: Library is a specialisation of Location). In common with all RDF-based data models the properties described are those typically expected to be present but there may be additional ones not documented here. The presence of these additional properties will not affect the behaviour of the system. The RDF model encourages reuse of existing work to promote interoperability between disparate systems. Therefore the data model uses several existing schemas such as those devised by Dublin Core, W3C and the FOAF project. Data exposed in these formats can be expected to have a significant number of tools and applications available that will already be able to consume it.</p> <p><a href="http://www.talis.com/tdn/platform/reference/directorymodel">read more</a></p> http://www.talis.com/tdn/platform/reference/directorymodel#comments Sat, 22 Apr 2006 17:45:26 +0100 Ian Davis 1380 at http://www.talis.com/tdn