how all search enginees work?

[vijendra_maker]

Hi i have a requirement where i have to find out strings,files,names,data etc.(may be in database,files or whatever)
Anyone knows how search enginees work basically for finding any name they check for all possibility.
Eg: If i search for java it will give informatio of java books,sites-url,all links,full information about java etc.
so how exactly they do all this.
I just need an extarct from whole of this.
The concept they follow or do they append some string values or add after or whatever they do.

Any idea highly appreciated.

Thanks
Vijendra

[code4java]

If I remember correctly I think all web pages have a meta data tag built into them and they specify keywords like java, or guns, or sex. What ever the website is about.

Google I believe also has a subscription service where if you pay them so much money then you will be at the top of their search list.

You might have better luck doing a search on Google.

here is a page that will get you started.
http://searchenginewatch.com/webmasters/article.php/2168031

[dlorde]

Google I believe also has a subscription service where if you pay them so much money then you will be at the top of their search list.If you pay Google, they'll put your link alongside the results of a search for related stuff - i.e. you can pay for those links along the top and down the right-hand side of the results page. But they go to extreme lengths not to contaminate the search result list itself with paid-for, hacked, or cheated links - their whole commercial value depends on 'fair' and reliable results. The basis of their search strategy is to give a page a rating according to the number of pages that link to it - of course, there's a lot more to it than that, and it's all very secret (every search engine guards their search algorithm closely because it's their main commercial strength). There's a whole industry based around getting client's links into search engine results, and the search companies continually tweak their search engines to avoid the 'cheats'. It's a war out there :rolleyes:

Computing is not about computers any more. It is about living...
N. Negroponte

[vijendra_maker]

Actually in my application i have a requirement where strings,files has to be searched(along with all possibilties).We are placing information in our database,files etc.
SO when i say search for "name";it sholud start searching "name" in all tables,databse,files along with all other nearer possibilities of "name"+"ing" or "ed" or anything else just like yahoo,goole or any other search engine does all this.

I need to know mechanism follwed by them.
I don't want all complexities but i sholud be able to make good search in my aplication.Security wise i am not much bothered as only in my application if you are searching anything file,word or whatever you should get the information and its related links thats my requiremnt.

I have got a link where i tried to get something:
but its free version is giving some error.
Anyone can test this also.

http://www.dbsight.net/?q=node/47

Please provide me information links whatever is possible.

Thanks
Vijendra