Ok then We see how to search engine turn in request into result
The Search Engine Does Not
Run Your Search In RealTime
Beacuse you know have overs billions website on the internet and hundreds or more be created every single minute.
so seach engine has the look to every single site to find one you wanted it would take Forever.
so Search Engines Are Constantly Scanning The Web In Advance.
When i search “Travel to Moon”
the search engine already has to give many answere in
The Internet is web pages connected to each other by Hyperlinks,Search Engine a constantly running a program called a SPIDER
SPIDER: a program that collect information about websites
each time it’s find the hyperlinks it’s follows that until has visited every page, he can find entire internet.
for each page the spider visit at recored any information in my need for search by adding a to special DataBase called a search index.
SEARCH INDEX: A database information used for doing a search
now we will see
How Does a SEARCH ENGINE GET Results?
when you ask
“how long does it take to get to the moon”
The search engine looks each of those words in the search index
Which is looking for the search terms could we terms millions of pages so the search engine
Determine the best matches to show first
search engine may need to guess what you’re looking for
how to search engine turn in request into result