- From: Howard Katz <howardk@fatdog.com>
- Date: Fri, 16 Apr 2004 08:04:40 -0700
- To: "RDF Data Access Working Group" <public-rdf-dawg@w3.org>
One more reference that might be useful : http://www.acm.org/sigmod/record/issues/0206/standard.pdf Howard > -----Original Message----- > From: public-rdf-dawg-request@w3.org > [mailto:public-rdf-dawg-request@w3.org]On Behalf Of Howard Katz > Sent: Friday, April 16, 2004 7:47 AM > To: Seaborne, Andy; RDF Data Access Working Group > Subject: RE: Supplemental XQuery reading list > > The mapping's actually in the other direction -- SQL to XQuery -- > but I know > what you mean. ;-) The basic idea is to be able to map SQL's tabular > structure into XML, so that XQuery can then see it as an instance of the > data model it needs to operate on. > > For online references, once again Don Chamberlin comes to the rescue. See > page 83 of this excerpt of his chapter, "Influences on the design > of XQuery" > from the "Experts" Book: > > http://www.informit.com/content/downloads/chap2_0321180607.pdf > > The section is titled "The need for an XML query language" and looks > specifically at the differences between XML and SQL. If you have the time, > read the whole chapter. It's *excellent* -- I can't praise it > enough -- and > well worth the price of admission for the whole book. This is the main > reference I'd been trying to find for Dan's reading list. Google and my > creative wits had failed me until this morning, when I stumbled > on it while > looking for something else. > > While they're unfortunately not available online, there are two other > chapters in the Experts book that are directly relevant to your question: > Denise Draper's "Mapping between XML and relational data" and Michael Rys' > "Integrating XQuery and relational database systems. Together they contain > more detail on the subject than you'd probably ever want to know. > > If you're not averse to reading articles in the popular trade press, > Jonathan Robie gives a succinct summary of the distinction between the two > approaches of XQuery and SQL/XML for accessing relational data at : > > http://www.adtmag.com/article.asp?id=7649 > > Finally, Ron Bourret gives a comprehensive overview of SQL <-> XML mapping > issues in general at: > > http://www.rpbourret.com/xml/XMLAndDatabases.htm#xmlquery > > If I come across any other useful references, I'll post them here. > > Howard > > > > Yes - that was me. I am interested in the mapping of Xquery to > SQL (i.e. > > the data is in an SQL database) as it might inform us about > RDF query => > > SQL. There again, it might not. > > > > Andy > > > > -------- Original Message -------- > > > From: Howard Katz <> > > > Date: 15 April 2004 17:32 > > > > > > Here's the additional reference on XQuery for those who like lots of > > > code > > > snippets when exploring new languages: > > > > > > http://www.datadirect.com/news/whatsnew/xquerybook/index.ssp > > > > > > This is Jonathan's Robie's Chapter One tutorial introduction to XQuery > > > from "XQuery from the Experts". It's lengthy (78 pages I think) but > > > highly > > > readable. > > > > > > Who was it that requested pointers on XQuery and SQL? Was that you, > > > Andy? > > > Sorry, I didn't jot down what your specific interest was. If you can > > > let me > > > know, I can point you in the appropriate direction. > > > > > > Howard > > >
Received on Friday, 16 April 2004 11:03:30 UTC