1. How Internet Search Engines work
● Search engine
● spider
● database
● URLs

2. Serch engine
● Each search engine
uses a crawler or
spider with its own set
of rules guiding how
doucuments are
gathered.

3. Spider
● Some spider ignore
links that lead to
graphics files, sound
files and
animationfiles.
● As the spider discover
s documents and
URLs

4. URLs
●URL is uniform resource locator and website
address.
●
● Exsample
● http://www.u-aizu.ac.jp/official/index_j.html

5. Database
● database is searched
based on the criteria
you've set.

6. Reference
● How the Internet works
● http://www.sophia-it.com/content/%E3%82%B9%E3
● http://khyodo.blog19.fc2.com/blog-entry-
974.html