Presentation on theme: "WHAT IN THE WORLD? Boolean Operators?. The Web is HUGE!! Over the years, it has become increasingly difficult to find things on the web since the number."— Presentation transcript:
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 its 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 Its 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 Its 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?
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