Re: XML Search Engine Holy War - Attributes vs. Elements
DuCharme, Robert wrote: > The sole purpose of ID type attributes is to uniquely > identify elements, and unique identifiers ought to be pretty handy when > searching for information. A system that can quickly locate elements with a > particular value in an IDREF type attribute would be very useful in link > maintenance and implementation. > > Come to think of it, a system that left out element content might be more > useful than one that left out attributes. Of course I'm kidding, but a nice > thing about implementing storage of attributes is that they map more easily > to relational databases where ID and IDREF attributes can be easily indexed > for searching. It's probably appropriate to make a distinction between precise matches and similarity searching. Using unique identifiers and indexing attributes will improve performance of the former. On the other hand, a search engine such as AT&T Whirl can recognize patterns in data. That enables it to do similarity matches, even in the absence of unique identifiers. ================== Ken North ============================= http://ourworld.compuserve.com/homepages/Ken_North knorth@m... ken_north@c... Java Developer's Conference, San Jose, California October 17-21, 1999 http://www.javadevcon.com XML One Fall, Santa Clara, CA November 8-11, 1999 http://www.xmlconference.com/xmlusa xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To unsubscribe, mailto:majordomo@i... the following message; unsubscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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