Op woensdag 27 april 2005 11:21, schreef Thomas Beale: > Bert Verhees wrote: > >> presented as belonging together, > > > >it is not that simple, a collection of information can have more then one > >number, and the CEN-standard does not provide meta-information in some > > cases, f.e. PatientExtendedInformation carries a Set<II>, which is a set > > of numbers (identifiers), those numbers in a list do not have > > meta-information, except for the OID, but that meta-information can only > > be resolved over a network-service (which does not yet exist). > > as I have indicated before, I think that CEN needs the data type we > added to openEHR - DV_INDENTIFIER, whose definition is below. I also
It would help me a lot if CEN would take this instead of the original ID, this one has all what is suitable for my purpose Bert > don't agree that it is realistic to identify everything with OIDs. There > are three reasons, the major one Bert has already given. > > 1. non-accessibility and/or performance of resolving engine > 2. size of ids inside data, particularly data fragments that can never > be sensibly accessed globally, only from within the context of some > larger blob. E.g. it doesn't make sense to access a single ELEMENT in a > CEN CLUSTER/ELEMENT tree, so why attach a 20 digit Oid to it? > > > class DV_IDENTIFIER > inherit > DATA_VALUE > > feature -- Access > > issuer: STRING > -- Issuing agency of these kind of ids > > id: STRING > -- The identifier value. Often structured, according to the > -- definition of the issuing authority???s rules. > > type: STRING > -- The identifier type, such as ???prescription???, or ???SSN???. > -- One day a controlled vocabulary might be possible for this. > > invariant > issuer_valid: issuer /= Void and not issuer.is_empty > id_valid: id /= Void and not id.is_empty > type_valid: type /= Void and not type.is_empty > > end > > > - thomas beale > > > - > If you have any questions about using this list, > please send a message to d.lloyd at openehr.org -- Met vriendelijke groet Bert Verhees ROSA Software - If you have any questions about using this list, please send a message to d.lloyd at openehr.org
