What is a Search Engine EIT, Author Gay Robertson, 2017

Search engines … An End-user application that allows you to search the internet for information stored on other websites Google is a global search engine. The EIT Search is a local search engine (EIT site search only) Can Index hundreds of millions of pages per day to match keywords the user keys into searches Search Engines Respond to tens of millions of queries per day

Commonly used Search Engines

Parts of a Search Engine A spider (also known as a crawler or bot) an automated browser that reads the HTML content of every page on every Web site using hypertext links to move between the pages

Parts of a Search Engine A catalogue that creates a huge index from the pages that have been read by the spider when you click “search” it is this database that is being searched in an efficient manner for lightning fast results

Parts of a Search Engine A program called a search algorithm that receives your search request, compares it to indexed entries, and returns results that are most relevant

Ask and you will receive The Search cycle Ask and you will receive

Search engine Help pages .. eg Google

Really useful stuff!!

Directories

Metacrawlers

For more help and information, go to http://www. computerhope http://www.webopedia.com/TERM/S/search_engine.html Esc to finish