Internet search engines work by using crawlers to collect information from websites and save them to databases. The databases contain the full text of web pages that crawlers access. Search engines then allow users to search these databases using keywords to retrieve relevant information from the stored web pages.

1. How Internet Search Engines work
Web presentation GROUP C
Database
fNewsgroup
Crawler
Search engine
How Internet Search Engines work – p.1/6

2. Database
A large amount of data will be able to be accumulated
according to a constant rule, and to manage uniformly.
It is the one like the library. Moreover, the et-
ymology is a base in the United States America.
How Internet Search Engines work – p.2/6

3. Newsgroup
Newsgroup is a group of the article divided in Net
News according to the theme and the purpose of the
topic.
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4. Crawler
The crawler is an automatic round robot that uses
it so that each index site and research labora-
tories may collect information on the web site.
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5. Search engine
Web site search engine where information open to the
public one the Internet can be retrieved by using key
word etc.
the full text of information open to the public in
WWW etc. is saved, and the search engine can
be divided roughly into two kinds of the directory
type classified according to the full-text search type
and the category retrieved according to the key word.
How Internet Search Engines work – p.5/6

6. References
• e-word
URL:http://e-words.jp/
• Wikipedia
URL:http://ja.wikipedia.org/wiki/
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