Reference DTD Example

Example

INFO:

jview /cp f:\msxml\classes;f:\msxml; msxml -d1 openPC.xml

XML:

<?xml version="1.0"?>

<!DOCTYPE openPC SYSTEM "openPC.dtd">


<openPC>
<item type = "PC" code = "ACME1">
	<make>
		<brand>Acme Deluxe</brand>
			<supplier id = "Acme"/>
	</make>
	<specification>
		<cpu type = "986" speed = "500"/>
		<harddisk type = "IDE" size = "10" units = "GB"/>
	</specification>

	<price n = "2000" units = "USD"/>
	<blurb>
		<p>A versatile PC for home &amp; business use. Fea-
		   turing as standard:</p>
		<ul>
			<li><index term = "Multimedia"/>Sound card</li>
			<li>90 day money back guarantee</li>
			<li>Mouse Mat</li>
		</ul>
	</blurb>
	<internal>
		<instock num = "44"/>
		<supportcalls num = "6"/>
		<perunitcost n = "1800" units = "USD"/>
	</internal>
</item>
</openPC>

DTD:

<!-- Document type Definition for the OpenPC catalog application -->

<!-- An openPC document contains one or more items -->
<!ELEMENT openPC (item)+>

<!-- an item contains these five subelements in this sequence -->
<!ELEMENT item (make, specification, price, blurb, internal)>

<!-- Every item is either a PC or a PRINTER. 
This is indicated by its type attribute.
If a value is not supplied for this attribute,
it defaults to PC -->
<!ATTLIST item type (PC|PRINTER) "PC">

<!-- Every item also has a code attribute.
No two items can share the same code. -->
<!ATTLIST item code ID #REQUIRED>

<!-- A specification element consists of a cpu
element optionally followed by a harddisk
element -->
<!ELEMENT specification (cpu,harddisk?)>

<!-- A blurb element consists of one of more
p or ul elements -->
<!ELEMENT blurb (p|ul)+>

<!-- A p element contains a mixture of character data and index
elements. Zero or more can occur -->
<!ELEMENT p (#PCDATA|index)*>

<!-- An index element is empty. It does not have any content -->
<!ELEMENT index EMPTY>

<!-- Ab index element has a term attribute.
A value for this must always be supplied -->
<!ATTLIST index term CDATA #REQUIRED>

<!ELEMENT supplier EMPTY>
<!ATTLIST supplier id CDATA #REQUIRED>
<!ELEMENT make (brand,supplier)>
<!ELEMENT li (#PCDATA|index)*>
<!ELEMENT brand (#PCDATA)>
<!ELEMENT cpu EMPTY>
<!ATTLIST cpu
	type CDATA #REQUIRED
	speed CDATA #REQUIRED>
<!ELEMENT harddisk EMPTY>
<!ATTLIST harddisk
	type (IDE|EIDE|SCSI) "IDE"
	size CDATA #REQUIRED
	units (GB|TB) "GB">

<!ELEMENT price EMPTY>
<!ATTLIST price
	n CDATA #REQUIRED
	units CDATA #REQUIRED>

<!ELEMENT ul (li)+>

<!ELEMENT internal (instock,supportcalls,perunitcost)>
<!ELEMENT instock EMPTY>
<!ATTLIST instock num CDATA #REQUIRED>
<!ELEMENT supportcalls EMPTY>
<!ATTLIST supportcalls num CDATA #REQUIRED>

<!ELEMENT perunitcost EMPTY>
<!ATTLIST perunitcost 
	n CDATA #REQUIRED
	units CDATA #REQUIRED>

OUTPUT:

msxml.jpg (62109 bytes)

viewer.jpg (32153 bytes)

Reference DTD Example

Example

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