Briefly discuss the three elements used by a search engine.
Answers
The search engine is a highly used web-based tool, which enables users to find information easily on the web.
Google, Yahoo, Bing are the examples of the search engine.
The three main components of search engine are database (all the information on the internet is stored in the database), web crawler (called as spider or bots, which is a software traversing the web to collect information), and search interfaces (an interface between the database and user, which helps the user to search via database).
Answer:
Spiders or Web crawlers: It is the software that browses the Internet in a systematic manner They are also known by various other terms such as ants, bots, automatic indexers, Web spiders and Web robots. In general, Web crawlers are used to maintain a duplicate copy of all the visited p They also maintain an index of the downloaded pages to provide quicker and better searches. pages,
• Indexing software: It is the software that receives the list of Web documents and Web addresses collected by the Web crawler. The indexing software extracts the information from the Web documents and Web addresses and then prepares the index of the available information. Finally, it stores the data in the database.
• Search algorithm: It refers to the mechanism of searching the keywords in the database of a search engine. If the searched keyword is found in the database, the Web documents and Web addresses related to the keyword are displayed to the user.