Ok so I am learning xml and schema's. argh..... 

In this schema, this line... 
xmlns:xs="http://www.w3.org/2001/XMLSchema"
say that the elements and data types declared with the xs prefix come
from http://www.w3.org/2001/XMLSchema. But that is url and I can go to
it. I see nothing that says anything about elements and data types. I
know the w3.org creates the standards for this type of stuff but
where?

In this line:
targetNamespace="urn:xmlns:25hoursaday-com:my-bookshelf" 
defines the targetNamespage as urn:xmlns:25hoursaday-com:my-bookshelf.
What does 'urn:xmlns:25hoursaday-com:my-bookshelf' mean? Is this just
arbitrary text?
Could it be anything?

In this line"
xmlns:bk="urn:xmlns:25hoursaday-com:my-bookshelf" 
say that the elements and data types declared with the bk prefix come
from urn:xmlns:25hoursaday-com:my-bookshelf. What is
'urn:xmlns:25hoursaday-com:my-bookshelf'. I know it was defined by
targetNamespace but what does that reslove to?

Where or what is 'urn:xmlns:25hoursaday-com:my-bookshelf'


*****************************************************************

<?xml version="1.0" encoding="UTF-8" ?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="urn:xmlns:25hoursaday-com:my-bookshelf"
xmlns:bk="urn:xmlns:25hoursaday-com:my-bookshelf"
elementFormDefault="qualified">
	<xs:element name="books">
		<xs:complexType>
			<xs:sequence>
				<xs:element name="book" type="bk:bookType" maxOccurs="unbounded"
/>
			</xs:sequence>
		</xs:complexType>
	</xs:element>
	<xs:complexType name="bookType">
		<xs:sequence>
			<xs:element name="title" type="xs:string" />
			<xs:element name="author" type="xs:string" />
			<xs:element name="publication-date" type="xs:date" />
		</xs:sequence>
		<xs:attribute name="publisher" type="xs:string" />
		<xs:attribute name="on-loan" type="xs:string" />
	</xs:complexType>
</xs:schema>

*********************************************************************

thanks

Ralph Krausse
www.consiliumsoft.com
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