Google Indexing, crawling and cashing

I need definition of google indexing, crawling and caching ??
how do they all work?

 

google indexing, Means Your Site Index by Google ( Check Link: www.yoursitename.com )
crawling Its Means your Site crawl by Google ( Check in Google Webmasters Tools )
caching Its Means Site Catch by Google ( Check in Google Page Rank Tool Bar )

Thanks

 

Rajeev I need explanation of these... how does it work and what we do to get our page be indexed by google

 

Indexing means, your site has been recognized by Google and is now in its data store index. Crawling is the procss after which your site is indexed. Google crawls over your website and indexes it. Caching is the date when your site was crawled and how it appeared to Google when it was being crawled.

 

thank you dear

 

Indexing, crawling and caching is an process of a search engine to store any webpage into his repository.

1)Search Engine Crawler crawl(visits on web-page), it's an automated program who visit your web-page, reads your web-page information leaving images.

2)After crawling crawler take an snap shot of that page, by that snapshot you can find out easily that when crawler come on your site earlier?
want to check your webpage cache go Google.com and type cache:http://www.xyz.com/

3)After doing STEP1 and STEP2 Search Engine index wour webpage url in his repository.

That,s why when you search on google then you find a

1)Title
2)Url of page
3)Description and
4)Cache

see below an example:
Google Title

www.[B]google[/B].com/ - Cached URL


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Hope information will be sufficient to you.

 

Thanks you it's really great and helpful information for me

 

So the crawl caching proxy work like this: if service X fetches a page, and then later service Y would have fetched the exact same page, Google will sometimes use the page from the caching proxy. Joining service X (AdSense, blogsearch, News crawl, any Google service that uses a bot) doesn’t queue up pages to be include in our main web index. Also, note that robots.txt rules still apply to each crawl service appropriately. If service X was allowed to fetch a page, but a robots.txt file prevents service Y from fetching the page, service Y wouldn’t get the page from the caching proxy. Finally, note that the crawl caching proxy is not the same thing as the cached page that you see when clicking on the “Cached” link by web results. Those cached pages are only updated when a new page is added to our index. It’s more accurate to think of the crawl caching proxy as a system that sits outside of webcrawl, and which can sometimes return pages without putting extra load on external sites.