Practical RDF
by Shelley Powers

This errata page lists errors outstanding in the most recent printing.

If you have technical questions or error reports, you can send them to
booktech@oreilly.com.  Please specify the printing date of your copy.

This page was updated March 16, 2006.

Here's a key to the markup:
	[page-number]: serious technical mistake
	{page-number}: minor technical mistake
	<page-number>: important language/formatting problem
	(page-number): language change or minor formatting problem
	?page-number?: reader question or request for clarification



Confirmed errors:



{xxx}  Section 2.2;

    {subject, predicate, object}
should be:
    (subject, predicate, object)

since, in common mathematical usage, {a, b, c} denotes three entities
whose order does NOT matter, whereas (a, b, c) denotes three entities
whose order DOES matter.



(20)  4th paragraph;
"from right to left"
should read 
"from left to right"


(23)  3rd last paragraph (code example);
pstcn.title should be pstcn:title

pstcn.description should be pstcn:description

Quotation marks around the literals appear to be missing and/or in the wrong places.


(23)  Example of converting RDF/XML to N3;
<bbd:monsters1.htm> pstcn:bio <#monster1> 
should be: 
<bbd:monsters1.htm> pstcn:bio <#monsters1>


(24)  Fig. 2-3;
The URI indicated in the figure is http://burningbird.net/articles/monsters3.com
rather than http://burningbird.net/articles/monsters3.htm as it should be.


{32}  Figure 3-1;
"monsters3.com" appears where "monsters3.htm" should occur in the URI of Figure 3-1.
This mistake occurs again in Figure 3-2, Figure 3-3, Figure 3-4, and Figure 3-5.  
The correct URI is listed in the RDF code snippets.


[p38]  Figure 3-5;
Throughout the book, blank nodes are drawn as rectangles, but
they should be drawn as ovals, according to the text.  For instance, p20 says "blank
nodes are shown as an empty circle".  p38 says "an oval with a generated identifier
is drawn".  But in the figures, they show rectangles, not circles/ovals. 


{48}  1st code sample;
The pstcn:Author and pcstcn:Title properties should not be capitalized.


{52}  Figure 3-7;
Two problems:
1) monsters3.com should be monsters3.htm
2) The reason object literal should be "First in the series"


{91}  2nd paragraph;
"rdf:subClassOf"
should be
"rdfs:subClassOf"


(118) 4th paragraph, last line;
The values 'Presentation' and 'Relevancy' should not be capitalized.


{235}  2nd paragraph;
A minor typo:
"< description>" 
should be 
"<description>"



(239)  last line of page;
"complimentary" 
should be 
"complementary"