3/1/2023 0 Comments Pdf search engine online![]() ![]() What you can do is find the URLS that are common between the first entry and second sentry. What if someone searches for Italian Pizza? Ooooh. So, let's say, you have 3 very small web pages that say http.// - Italian Pizza http.// Sicilian Pizza http.//- Italian Shoes Our table now looks like this Italian - http.//, http.// Pizza - http.//, http.// Sicilian - http.// Shoes - http.// Now, when someone searches for Pizza, you simply look up the record for Pizza and you get both the web pages.įastest search engine in the world, right? All it needs to do is look up one record. Not only do you do this, you split the page content into individual terms, and create a record for each term. Make the page content the key and the URL the value. So, what do you do? You flip this table around. Good, right? Well, not good for search! Why? Because if you are searching for pizza, you will have to go through all the records and scan the page content column of every row for the word pizza.īad, no? It has a performance of O(n), and when you are talking about the web, that n is going to get big. You type in the URL in your browser, the browser looks up by the primary key in the database, gets the row and shows you the page content. URL contains the URL of a page, and page contents contains it's contents. You can think of the web as a 2 column table. So, let's imagine the web as a a hypothetical database. The core of a search engine is a reverse index. I want to create a search engine for searching for text within word and PDF files.
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