4.3.2 - The Internet - Search Engines
- Created by: Annie
- Created on: 28-04-13 17:56
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- Search Engines
- How do search engines work and how are pages added to a search engine?
- Websites can be registered with a search engine by filling out a form
- Web crawlers
- A web crawler is a program which accesses web pages and creates an index based upon its content
- The index is the search engines database which it accesses during a search to allow for fast responses
- A web crawler is a program which accesses web pages and creates an index based upon its content
- Accessing Information
- Web Crawlers
- used by search engines to provide searchable indexes
- URL
- Universal Resource Locator
- To access the website, simply type in the name of the URL into the address bar
- Hyperlinks
- Hyperlinks are used to surf from one site to another
- Hyperlinks are usually underlined and in a different font colour to the rest of the text
- Web Crawlers
- Getting the most of your search
- Exact Matches
- Using speech marks around a phrase will ensure an exact match of words is on the webpages being searched rather than words randomly on a page
- Boolean Searches
- AND
- Using "AND" will ensure that you get results with the words you are looking for
- OR
- Using "OR" in a search will search for one or another phrase
- E.g. Baking Recipes OR Oven recipes
- Using "OR" in a search will search for one or another phrase
- NOT
- Will not search for words which may commonly be associated with your search
- AND
- Exact Matches
- Order of Results
- Sponsored matches are more likely to come up first
- The site most selected by other users with the same/similar searches
- Closest match to the words in the search
- Pages which are most linked to the search engine or most used are more likely to come up first
- How do search engines work and how are pages added to a search engine?
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