I have completed my first draft of an article entitled "An introduction
to Search/Retrieve URL Service (SRU)". From the text:

   This article is an introduction to the "brother and sister" Web
   Service protocols named Search/Retrieve Web Service (SRW) and
   Search/Retrieve URL Service (SRU) with an emphasis on the later.
   More specifically, the article outlines the problems SRW/U are
   intended to solve, the similarities and differences between SRW
   and SRU, the complimentary nature of the protocols with OAI-PMH,
   and how SRU is being employed in a sponsored NSF grant called
   OCKHAM to facilitate an alerting service. The article is seasoned
   with a bit of XML and Perl code to illustrate the points.

   http://dewey.library.nd.edu/morgan/sru/intro2sru.txt

Comments and corrections are more than welcome.

--
Eric "Getting Pyched For Fireworks" Morgan
(574) 631-8604