Web Search Overview Crawling IR Documents vs. Records Example bank database query Find records with balance >$50,000 in branches located in Amherst, MA. Matches easily found by comparison with field values of records Example search engine query bank scandals in western mass This text must be compared to the text of entire news stories 7Web Search Overview & Crawling 7 Documents vs. Records ▪ Example bank database query ▪ Find records with balance > $50,000 in branches located in Amherst, MA. ▪ Matches easily found by comparison with field values of records ▪ Example search engine query ▪ bank scandals in western mass ▪ This text must be compared to the text of entire news stories IR