Boolean Operators by l030RMO

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									Boolean Operators?

      WHAT IN THE
       WORLD?
                The Web is HUGE!!

 Over the years, it has become increasingly difficult to
 find things on the web since the number of websites
 increases exponentially.
                  Search Engines

 Search engines allow you to look for information
 based on KEY WORDS you would provide.
                        Hits

 Every time someone goes to a Web Page, it is called
 a HIT
                        Queries

 A Query is like a question. It is a method of filtering
 data.
                  Boolean Logic

 Search engines use Boolean Logic

 Nineteenth century mathematician George Boole,
 invented Boolean logic
               Boolean Operators

 Boolean operators are based on a simple yes or no
 ranking system

 The primary boolean operators are:
   AND
   OR
   NOT
                But What Do They Do?

 AND
   The AND operator instructs the Search Engine to search for all
    documents containing all words you specify
 NOT
   Sometimes it’s easier to narrow a search by specifying what
    you are NOT looking for
 Symbols
   Some search engines use the “+” sign as the operator, which
    works the same way as the AND operator
                   Process


 Searching is a process of trial and error


 The first page of documents/sites should have
 what you are looking for

 Re-define your search or go to a different search
 engine if you are not finding your data
                    Time


 It’s better to spend a little time narrowing down
 your search than following every result you get
                 Case Sensitivity

 Most search engines do not require key operators in
 all caps
     Pre-set Operators & Quotation Marks

 Pre-set Operators
   Some search engines such as “Google” have boolean operators
    already setup


 It’s a good idea to put quotation marks around groups
  of words you want to appear together ie “Pentium 4”

 Doing this will limit your search, instead of getting
  anything with Pentium and anything with a 4 your
  would get sites with just the words Pentium 4
                     …the end

 Can you find the end of the internet using Boolean
 Operators?
Boolean Operators?

      WHAT IN THE
       WORLD?

								
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