[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: A Systematic Approach to using Simple XML Vocabularies to
Is there a deadline for the completion of this project ? they want it when ? :-) Quoting "Roger L. Costello" <costello@m...>: > Note: This is a continuation of the thread: > > XML Vocabularies for Large Systems - 3 Philosophically Different > Approaches > > I have changed the title to reflect the narrowed focus. > > GOAL > > My goal is for us (the xml-dev group) to collectively define a systematic > approach to using simple XML vocabularies to implement large (complex) > systems. > > Yesterday Len and Peter outlined two strategies. I would like to flesh out > their ideas. > > TWO SIMPLE VOCABULARIES > > Let's consider a concrete example. Suppose that the following two simple > vocabularies have been created: > > 1. Postal Address Vocabulary: > > <PostalAddress>, <Addressee>, <Street>, <City>, <State>, <Zipcode> > > 2. Book Vocabulary: > > <Book>, <Title>, <Author>, <Date>, <ISBN>, <Publisher> > > CHALLENGE > > Imagine that a large system requires an Invoice XML vocabulary for a Book > purchase. How can the above simple XML vocabularies be used to implement > this Invoice vocabulary? > > Here is an example of an Invoice: > > <Invoice> > <PostalAddress id="RLC"> > <Addressee>Roger L. Costello</Addressee> > <Street>38 Boylston St.</Street> > <City>Boston</City> > <State>MA</State> > <Zipcode>01320</Zipcode> > </PostalAddress> > <Book id="Bach"> > <Title>Illusions</Title> > <Author>Richard Bach</Author> > <Date>1977</Date> > <ISBN>0-440-34319-4</ISBN> > <Publisher>Dell Publishing Co.</Publisher> > </Book> > </Invoice> > > THE LEN BULLARD APPROACH > > The approach that Len suggested was to use a "metadata framework" which ties > together the simple vocabularies. Let me try to make concrete Len's > suggested approach using the above Invoice example. > > First, use the simple vocabularies to provide the basic information: > > <PostalAddress id="RLC"> > <Addressee>Roger L. Costello</Addressee> > <Street>38 Boylston St.</Street> > <City>Boston</City> > <State>MA</State> > <Zipcode>01320</Zipcode> > </PostalAddress> > > <Book id="Bach"> > <Title>Illusions</Title> > <Author>Richard Bach</Author> > <Date>1977</Date> > <ISBN>0-440-34319-4</ISBN> > <Publisher>Dell Publishing Co.</Publisher> > </Book> > > Second, create a "metadata framework" which brings cohesion to the simple > vocabularies: > > <Invoice> > <PurchasedBy href="RLC"/> > <PurchasedItem type="book" href="Bach"/> > </Invoice> > > Len noted that Topic Maps might be used as the metadata framework. > > Len, have I characterized your ideas correctly? > > THE PETER HUNSBERGER APPROACH > > In the above Invoice example tags that are specific to postal addresses and > books were used. A disadvantage is that many domain-specific simple > vocabularies must be created. > > Peter's approach is to provide a "generic set of tags", coupled with a rich > set of ways to relate the generic tags. > > Below I have attempted to define the Invoice using generic tags coupled with > "relationship tags". Obviously I don't know what I am doing. Peter, would > you fix this please? > > <Collection id="RLC"> > <Object>Roger L. Costello</Object> > <Object>38 Boylston St.</Object> > <Object>Boston</Object> > <Object>MA</Object> > <Object>01320</Object> > </Collection> > > <Collection id="Bach"> > <Object>Illusions</Object> > <Object>Richard Bach</Object> > <Object>1977</Object> > <Object>0-440-34319-4</Object> > <Object>Dell Publishing Co.</Object> > </Collection> > > <Collection> > <Object href="RLC"/> > <Relation>Purchased By</Relation> > <Object href="Bach"> > </Collection> > > What do you (xml-dev'ers) think about all this? Can you think of other > approaches? /Roger > > > > > ----------------------------------------------------------------- > The xml-dev list is sponsored by XML.org <http://www.xml.org>, an > initiative of OASIS <http://www.oasis-open.org> > > The list archives are at http://lists.xml.org/archives/xml-dev/ > > To subscribe or unsubscribe from this list use the subscription > manager: <http://www.oasis-open.org/mlmanage/index.php> > > ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.
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