Search Engines are basically a website which looks for a new webpages on a WWW(world wide web) and when find then its crawlers activated and read out the source code of a webpage or a website and store in their local server.Crawlers actually crawl the webpages or websites just like spider crawl.After storing data in local server indexer are activated to index these stored data in their own category,mean a school website should index in school category and web development website index in web development category just like web designing website index in web designing category.It arrange the stored data in a regular manner after collecting data from the local server. After indexing when the user put it’s query in search engine via browser then search engine show related result pages which is relevance to the user query, that’s how search engine works.
I hope you understand what you read above.
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