By Sas Jacobs
XML has been round for a few years, so what makes this ebook various? good, most of the rivals in the market are huge tomes; this booklet assumes a distinct procedure, exhibiting so that you can supply the reader all they should understand to hit the floor operating, with out making them trawl via thousands of pages of syntax. The e-book additionally supplies the main updated photo of the topic—XML aid within the newest internet browsers, growing XML-driven functions utilizing the main models of internet criteria and server-side languages, together with CSS 2.1/3, DOM, XSLT and XPath 2, personal home page five, ASP.NET 2, and plenty of extra. eventually, the ebook presents an creation to Ajax-style programming, that is an important subject for contemporary internet builders to appreciate. XML is center to Ajax, so an figuring out of it really is crucial whilst studying the way to application Ajax performance. This ebook consequently offers a very good stepping stone for readers wishing to take this direction.
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Additional info for Beginning XML with DOM and Ajax: From Novice to Professional (Beginning: From Novice to Professional)
Let’s move on to look at the processing of XML documents. The XML Processing Model The XML recommendation assumes that an XML document will be processed in a particular way. The model indicates that an XML processor passes the content and structure of the XML document to an application. XML processors are usually called XML parsers, as they parse the XML document; see Figure 1-2. Figure 1-2. The XML document-processing model Common XML processors include Microsoft XML Parser (MSXML), Apache Xerces2, and the Oracle XML parser.
First, the XML schema language is a vocabulary of XML. XML schemas are more powerful than DTDs and include concepts such as data typing and inheritance. Unfortunately, they’re also much more complicated to construct compared with DTDs. A further disadvantage is that XML schemas offer no equivalent of a DTD entity declaration. One important aspect of XML schemas is that a schema processor validates one element at a time in the XML document. This allows different elements to be validated against different schemas and makes it possible to examine the validity of each element.
You saw earlier that XPath expressions specify locations in XSLT stylesheets. These expressions can also be used in XPointers, which point to a specific location within an XLink. Before we see this, let’s look at XLinks. Linking with XML XLinks provide a powerful alternative to traditional XHTML links. XHTML links allow you to link from a source to a destination point, in one direction. org/TR/ 2001/REC-xlink-20010627/. org/TR/2003/ REC-xptr-xmlns-20030325/). org/TR/2002/WD-xptr-xpointer-20021219/).
Beginning XML with DOM and Ajax: From Novice to Professional (Beginning: From Novice to Professional) by Sas Jacobs