[thesite] [Fwd: [Fwd: evolt error]]
Daniel J. Cody
djc at starkmedia.com
Thu Feb 1 10:19:48 CST 2001
clues? I can't check this out right now..
Peter Van Dijck wrote:
Hi, upon editing an article of mine, I got this error:
Error Diagnostic Information
Oracle Error Code = 1401
ORA-01401: inserted value too large for column
SQL = "UPDATE content SET categoryid = '20', datemod = '26-Jan-01',
signdate = sysdate, contentname = 'A brief introduction to metadata
and the
semantic web', synopsis = 'The web is growing fast. And peer to peer
computing promises even faster growth of stuff we can access. And
logically, the more stuff there is, the harder it becomes to find the
particular stuff you were looking for. Metadata could be the
answer.', body
= :1, signoff = 3 WHERE contentid = 5263"
Query Parameter Value(s) -
Parameter #1 =
(terms used, links and metadata about this article at the bottom)
The web is growing fast. And peer to peer computing promises even
faster
growth of stuff we can access. And logically, the more stuff there
is, the
harder it becomes to find the particular stuff you were looking for.
Metadata could be the answer.
The problem
Web documents lack metadata.
Sure, some sites use some of the metatags, and the title tag gets
used a
lot, but even this limited amount of metadata is poorly defined
(what is
supposed to go in that title tag anyway?) and poorly used.
This lack of metadata makes it really hard to search the web, and
limits
it's use. It's really hard to search for related documents for example.
The solution
The core of the World Wide Web Consortium's (W3C) metadata vision is a
concept known as the Semantic Web. The semantic web means that all the
stuff out there has metadata with it that describes it.
But is the W3C then going to define thousands of metatags for every
possible subject? Don't think so, Jose.
Enter the Resource Description Framework (RDF).
The resource description Framework is an XML-like standard for defining
vocabularies that define metadata.
These vocabularies can then be used to describe documents. There
already
are a bunch of vocabularies out there (mostly for describing books),
that
can be used, but anyone could invent a new one. Market forces decide
which
ones get popular.
The future
This is all of little consequence to web developers right now. But
anyone
involved in content management should watch this space, interesting
times
are ahead.
Terms used
Metadata: metadata is data about data. I'll illustrate with a few
examples:
the author of a book is metadata. The category a library classifies
a book
in is metadata about that book. The title argument of an tag is
metadata.
Related links:
The power of metadata
http://openp2p.com/pub/a/p2p/2001/01/18/metadata.html
(a really good introduction at http://openp2p.com)
What is RDF?
http://www.xml.com/lpt/a/2001/01/24/rdf.html
(really good as well at http://xml.com)
Some metadata about this article (you may have noticed, more is
provided by
evolt):
Author: Peter Van Dijck, aka pedrito
(for example, for meta data on the author, click on the author link
at the
top of the article)
Title: Introduction to metadata and the semantic web.
Inspiration: the above articles
Date of writing: Friday, January 2001
keywords: metadata, semantic web, p2p, Resource Description
Framework, rdf,
xml, content management.
Data Source = "EVOLT"
The error occurred while processing an element with a general
identifier of
(CFQUERY), occupying document position (24:7) to (24:56) in the
template
file /home/evolt/main_html/evolt/article/act_process.cfm.
Date/Time: Thu Feb 1 04:11:02 2001
Browser: Mozilla/4.0 (compatible; MSIE 5.5; Windows NT 4.0)
Remote Address: 213.38.76.82
HTTP Referer:
http://evolt.org/article/index.html?action=edit&tid=18&aid=5263
<http://evolt.org/article/index.html?action=edit&tid=18&aid=5263>
Query String: section=article&action=process
--
Daniel J. Cody
Systems Administrator
Starkmedia | for the web
219 N. Milwaukee Street
Milwaukee, WI 53202
p 414.226.2710
f 414.226.2716
e dan at starkmedia.com
w http://www.starkmedia.com
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