Meeting minutes
Issue 146
detlef: Would like to be able to reference each item within a list
erich: Want to also be able to reference the list itself?
detlef: We have both arrays and sequences. Sequences can be complex objects, whereas an array can only hold primitive objects.
… And a sequence has a common template for all objects in it.
eric: I'll try generating a URN for each element of the list.
dbooth: In detlef's example of a sequence in which one item is the heart, and you want to reference it, how is that done in DICOM?
ACTION: Detlef to provide an exmaple of how he currently references the heart in an example like that
detleft: They look like foreign key references
detlef: Also, DICOM has an ER model, that says how these objects reference each other. It is hierarchical, and uses relationship links. These could be easily modeled in RDF.
… But it broke down into FKs in RDMSs, because the std they were implementing didn't allow them to implement the ER model directly. But I think we could in RDF. Hierarchy is just a special case for an RDF graph.
ACTION: Detlef to create an issue for that
eric: Is there a std for the relational model? Detlef: No. The official std is the ER model.
eric: What about ordering of attributes?
detlef: The order is sometimes very important.
ACTION: Erich to add another option to turn list elements that start w bnode, turn it into a URN indicating the index into the list.
Next week
detlef: I'll be out next week.
ADJOURNED