Dear Barry, > Georg, your comment about the URI scheme into which a given material fits > seems motivated not by the Primer but rather by the British Museum data
Since the the URI scheme of the BM is given as a linked data example in the primer, my comments are about the texts and the figures in the primer and the purpose they serve. > That being said, one should not attempt to 'read' URIs, that's a basic > principle of REST as much as Linked Data; Yes, for sure. So why should a primer include an example that creates the appearance that URIs should have a structure that makes them "more readable" for humans? > Further, nothing about the illustrative identifier scheme implies the > use of a triplestore (I should know, I load our data into other forms of > DBMS). Yes, you are right, it is not explicitly mentioned. Nevertheless when talking about RDF and Linked Data like the example does, it seems to be obvious to assume a triple store. If you take a look at Linked Data Resources available, it will be hard to find any other resource that mints URIs the way that is given in the primer, because - as you said yourself - it is not common practice. As you deal with other kinds of DBMS than triples stores you might have good reasons to expose your data that way, but then it is a special case that is not suitable for a example in some kind of primer. > The problem you mention about 'multiple inheritance' counts only under the > unique name assumption, which holds neither in REST nor Linked Data. By refering to "multiple inheritance" I refer to the fact that any instance can be an instance of one, two or more classes at the same time. If you have the name of the classes inside a URI, you should have a rule on how to deal with multiple names. For example: In the last figure (p.20) "A Bibliographic Object" is rdf:type of many classes. According to the given URI scheme "http://collection.[domain]/id/object/[idenitifier]"; what would its URI look like? http://collection.[domain]/id/document-bibliographic_series-skosconcept/[idenitifier] ? Regards, Georg
