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This chapter is from the book

This chapter is from the book

Sams Teach Yourself XML in 21 Days, 3rd EditionSams Teach Yourself XML in 21 Days, 3rd Edition

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This chapter is from the book

This chapter is from the book

Sams Teach Yourself XML in 21 Days, 3rd EditionSams Teach Yourself XML in 21 Days, 3rd Edition

Learn More Buy

Q&A

  1. Can I use an XML validator to test an XML document's well-formedness?

  1. Yes, if you have a DTD or XML schema for the document—an XML validator will also report whether the document is well-formed or not. However, you do need a DTD or XML schema if you want to use a validator—very few will check a document without one. One program that will check an XML document's well-formedness without a DTD or XML schema is Internet Explorer. If the document is not well-formed, you'll see the message "The XML page cannot be displayed", and Internet Explorer will tell you the exact problem with the document.

  1. Do I need to use namespaces if there's no chance of tag name conflicts with other XML applications?

  1. Often, yes. Namespaces aren't used solely to avoid tag (and attribute) name conflicts—using a namespace also indicates to an XML processor what XML application you're using. For example, if you're using MathML, you must use the current MathML namespace or most MathML-enabled XML processors will complain.

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Other Collection and Use of Information


Application and System Logs

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Children


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Marketing


Pearson may send or direct marketing communications to users, provided that

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Correcting/Updating Personal Information


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Sale of Personal Information


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Supplemental Privacy Statement for California Residents


California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure


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Links


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Requests and Contact


Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice


We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020