4: Building Simple, Effective Queries in Visual Studio .NET

Generation Denso QR Bar Code in Visual Studio .NET 4: Building Simple, Effective Queries

Take a look at Figure 4-8, which shows the Google Advanced Search page, to see just how many search options are under your control Ah, the power Using the Advanced Search page, you can control search terms by entering text in several different text boxes labeled as follows: with all of the words: This option is the equivalent of a normal, implicit AND Google search with the exact phrase: This option is just like entering a quoted phrase in the Google search box with at least one of the words: This is the same thing as using the OR operator between the words in a normal search without the words: The words you enter in this box are treated as if they each had the exclusion operator ( ) prepended to them The Advanced Search page is your first stop if you want to adjust Google settings For example, you can adjust how searches are conducted, how pages are returned (including the number of results per returned page), and the file formats to be shown as return results You can also restrict searches to a particular Web domain (I show you how to do the same thing using the site operator in 5)

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You should know your file format options, especially if you re doing research in records that aren t likely to be associated primarily with the World Wide Web Google s default is to show you all file formats, but by using the Advanced Search page you can exclude standard Web pages (HTML) and restrict search results to your choice of files in Adobe Acrobat (pdf), Postscript (ps), Microsoft Word (doc), Microsoft Excel (xls), Microsoft PowerPoint (ppt), or Rich Text Format (rtf) formats Restricting the file format might lead to improved search results in a number of situations For example, if you are interested in scholarly or academic research papers, it is a good bet that you ll find these saved as Postscript files, so you can restrict your search to just look for this file type

Understanding the results page that Google displays when you make a search is very important to researchers If you know what you are looking at, you can save a great deal of time and also glean valuable hints for refining a search to help achieve your research goals Figure 4-9 shows a typical results page This page shows the first ten search results for the query

This query might be used in a research project to analyze how to improve traffic flow and increase pedestrian safety around the North Berkeley BART (Bay Area Rapid Transit) station By default, Google only gives you ten results per page You can change your settings so that you see more results per page Simply click either the Preferences link or the Advanced Search link on the search results page (see Using the Advanced Search Page ) Results are returned in the order of their PageRank in Google s index Pages with the highest PageRank are at the top of the list I explain the details of how PageRank works in 11 For now, you can think of PageRank as Google s evaluation of how the Web as a whole evaluates the merit of each Web page Each search results page provides statistics in the upper-right corner (above the actual search results) that show you how many results were found in total and how long the search took

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The total count of search results is an estimate, not the precise number It would take Google too long to figure out the actual number of results each time In addition, the statistics part of the results page provides links to each of the terms in a multiword search; these links take you to the definition of the term at Answerscom The Answerscom definition page provides a link back to the most popular Web sites for the term (using Google of course!), so this can be a speedy shortcut if you decide you need to broaden a search Each of the results on the page is represented by a snippet of text from the Web page the result points to A link to the Web page is also provided, with the title of the page as the text for the link, if it is available (the page s URL is used if it is not) Each result also provides a Cached link (see the upcoming section, Cached results ) and a Similar Pages link (see Refining your search, also coming up)

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