Gerard Freriks wrote: > I agree. > > The function of a data type is enable interpretation of a series of > bits. It expresses one facet of a semantic notion. > > The function of things above (other than) the data type is to indicate > semantic notions. > Including the semantic notion of Null. > > I can't understand why HL7 views Null a part of the data type specs. > > It is not a good sign that HL7 keeps the Null at this place after all > these years of comments.
yes, well, that's another issue with it....in openEHR and CEN it is modelled based on the real world situation (i.e. that null flavour is not inherently part of a data value, but only part of its use in some context, e.g. in ELEMENT.value), although I can still imagine improvements. But we need to walk (steadily) first. - thomas - If you have any questions about using this list, please send a message to d.lloyd at openehr.org
