By Emily A. Vander Veer
XML (Extensible Markup Language) permits net builders to reinforce database connectivity, improve pages with really good info parts, and in a different way flow past the constraints of HTML. This hugely visible educational demonstrates over a hundred assorted XML operations, from formulating record kind Definitions (DTDs) to constructing types with Extensible Stylesheet Language (XSL). The CD-ROM includes code examples and an e-version of the booklet.
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Extra resources for XML: Your Visual Blueprint for Building Expert Web Pages
While XML document structure overall is fairly intuitive to human readers, specific details of your particular XML document may not be. Including a detailed comment helps ensure that readers, from developers to third-party integrators, understand your reasons for modeling the data the way you have. Provide additional processing description. XML provides all the constructs necessary for conveying processing information to the client-side parser or custom processor. However, comments enable you to include information useful to human readers, such as developers processing your XML document for the first time.
ElementName is the name of a repeating data element. The value of the XML element, along with optional attributes and data constraints, combine to identify instances uniquely within an XML document. elementData1, elementData2, and elementDataN represent unique XML data associated with each repeating element. Y The syntax to declare a repeating data element is the same as that required to declare non-root XML data elements: DECLARE A REPEATING DATA ELEMENT ⁄ Open the XML file in which you want to create a repeating data element.
22 ¤ Position your cursor directly before the closing angle bracket (>) of the element to which you want to associate the attribute. ■ In this example, the element to which the attributes will be associated is product. CREATING A REAL-LIFE XML FILE You may choose to create an empty element — such as the nutrition_info element described in this section’s sample code — that contains nothing but attributes. Or you may also choose to model all of your data, including data descriptions, as separate elements, without any attributes at all.