By Serge Abiteboul, Peter Buneman, Dan Suciu
Filenote: PDF is searchable picture ocr with front/back disguise. Bookmarked TOC. PDF is 260 pages
Publish 12 months note: First released October twelfth 1999
The net is inflicting a revolution in how we symbolize, retrieve, and strategy details Its progress has given us a universally available database yet within the kind of a principally unorganized choice of files. this is often altering, due to the simultaneous emergence of latest methods of representing facts: from in the internet group, XML; and from in the database group, semistructured info. The convergence of those methods has rendered them approximately exact. Now, there's a concerted attempt to increase powerful ideas for retrieving and processing either varieties of data.
Data at the Web" is the single accomplished, updated exam of those quickly evolving retrieval and processing suggestions, that are of serious significance for the majority internet- and data-intensive agencies. This e-book bargains targeted suggestions to a variety of functional difficulties whereas equipping you with a prepared realizing of the elemental matters together with facts types, question languages, and schemas interested in their layout, implementation, and optimization.
You'll locate it to be compelling interpreting, no matter if your curiosity is that of a practitioner interested by a database-driven internet company or a researcher in computing device technological know-how or comparable field.
* presents an in-depth examine XML and different applied sciences for publishing based files at the Web.
* Examines lately built tools for querying and updating established internet files and semistructured information, together with XML-QL and XSL.
* appears deeper into the convergence of net and database ways to semistructured facts presentation and querying.
* information useful examples of the way those ideas are already being utilized and the way they are going to be utilized in the close to future.
* Teaches sound concepts for writing queries over net info, describing free schemas over in part established information, and enforcing and optimizing queries on semistructured data."
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Extra resources for Data on the Web: From Relations to Semistructured Data and XML
1 illustrates a simple way to display a small table with three persons in HTML and its rendering with the Netscape browser. The HTML tags used here are
for paragraph (start a new line), for boldface, and for italic. While the rendering is human-readable, there is nothing in the HTML text to make it easy for other programs to understand the structure and content of such data. Applications that need to read Web data must contain a "screen scraping" software component dedicated to extracting structured data from the Web.
2 contains an example in which several
2 XML Attributes XML allows us to associate attributeswith elements. Here we have to be a little careful with terminology. Attributes in the relational sense of the term have so far been expressed in XML by tags. XML uses the term "attribute" for what is sometimes called a "property" in data models. In XML, attributes are defined as (name,value) pairs. 12
Data on the Web: From Relations to Semistructured Data and XML by Serge Abiteboul, Peter Buneman, Dan Suciu