Page 504 Saturday, December 15, 2001 2:12 PM in Microsoft Office Make qr barcode in Microsoft Office Page 504 Saturday, December 15, 2001 2:12 PM

How to generate, print barcode using .NET, Java sdk library control with example project source code free download: Page 504 Saturday, December 15, 2001 2:12 PM generate, create qr bidimensional barcode none for microsoft projects GS1 Glossary Extensible Mar Microsoft Office QR-Code kup Language (XML). 15 . Common Programming Error 15.8 Any element, a ttribute or relationship not explicitly defined by a DTD results in an invalid document.. XML documents Microsoft Office QR Code 2d barcode must reference a DTD explicitly. Figure 15.8 is an XML document that conforms to letter.

dtd (Fig. 15.7).

. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 < xml version = "1.0" > <!-- Fig. 15.

8: letter2.xml --> <!-- Business letter formatted with XML. --> <!DOCTYPE letter SYSTEM "letter.

dtd"> <letter> <contact type = "from"> <name>Jane Doe</name> <address1>Box 12345</address1> <address2>15 Any Ave.</address2> <city>Othertown</city> <state>Otherstate</state> <zip>67890</zip> <phone>555-4321</phone> <flag gender = "F" /> </contact> <contact type = "to"> <name>John Doe</name> <address1>123 Main St.</address1> <address2></address2> <city>Anytown</city> <state>Anystate</state> <zip>12345</zip> <phone>555-1234</phone> <flag gender = "M" /> </contact> <salutation>Dear Sir:</salutation> <paragraph>It is our privilege to inform you about our new database managed with XML.

This new system allows you to reduce the load on your inventory list server by having the client machine perform the work of sorting and filtering the data. </paragraph> <paragraph>Please visit our Web site for availability and pricing. </paragraph> <closing>Sincerely</closing> <signature>Ms.

Doe</signature> </letter> XML document referencing its associated DTD.. Fig. 15.8 Page 505 Saturday, December 15, 2001 2:12 PM 15 . Extensible Mar kup Language (XML). This XML docum Microsoft Quick Response Code ent is similar to that in Fig. 15.3.

Line 6 references a DTD file. This markup contains three pieces: The name of the root element (letter in line 8) to which the DTD is applied, the keyword SYSTEM (which in this case denotes an external DTD a DTD defined in a separate file) and the DTD s name and location (i.e.

, letter.dtd in the current directory). Though almost any file extension can be used, DTD documents typically end with the .

dtd extension. Various tools (many of which are free) check document conformity against DTDs and Schemas (discussed momentarily). The output in Fig.

15.9 shows the results of validating letter2.xml against letter.

dtd using Microsoft s XML Validator. Microsoft XML Validator is available free for download from

com/downloads/ samples/Internet/xml/xml_validator/sample.asp. For additional validation tools, visit www.

. Fig. 15.9 XML Validator validating an XML document against a DTD. Page 506 Saturday, December 15, 2001 2:12 PM Extensible Mar qr codes for None kup Language (XML). 15 . The Microsoft Microsoft Office QR Code ISO/IEC18004 XML Validator can validate XML documents against DTDs locally or by uploading the documents to the XML Validator Web site. Here, letter2.xml and letter.

dtd are placed in folder /pythonhtp1/pythonhtp1_examples/Ch15. This XML document (letter2.xml) is valid because it conforms to letter.

dtd. XML documents that fail validation still may be well-formed documents. When a document fails to conform to a DTD or Schema, Microsoft XML Validator displays an error message.

For example, the DTD in Fig. 15.8 indicates that the contacts element must contain child element name.

If this element is omitted, the document is well formed, but not valid. In such a scenario, Microsoft XML Validator displays the error message shown in Fig. 15.

10.. 15.6.2 W3C XML Schema Documents This section i Microsoft Office qr codes ntroduces W3C XML Schema5 a W3C Recommendation (i.e., a stable release suitable for use in industry).

Many developers in the XML community believe DTDs are not flexible enough to meet today s programming needs. For example, programs cannot manipulate DTDs (e.g.

, search, transform into different representations such as XHTML, etc.) in the same manner as XML documents because DTDs are not themselves XML documents. These and other limitations led to the development of Schemas.

Unlike DTDs, Schemas do not use EBNF grammar. Instead, Schemas use XML syntax and are actually XML documents that can be manipulated programmatically. Like DTDs, Schemas require validating parsers.

In the near future, Schemas likely will replace DTDs as the primary means of describing XML document structure. A DTD describes an XML document s structure, not the content of that document s elements. For example,.

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