Internet search engines use crawlers or spiders to discover documents and URLs on the web. The spiders send information about the documents and URLs to indexing software. When a user searches for something, the search engine checks its indexed database to return relevant results.

1. How Internet Search Engines Work
s1160241 Miyuki Yoshizawa
s1160253 Fuyuko Watanabe
s1160254 Mai Watanabe
s1160255 Marina Watanabe

2. OUTLINE
 Summary
 Concept
 Question
 Answer

3. SUMMARY
Each search engine uses a crawler or spider
with its own set are gathered. As the
spider discovers documents and URLs,
software agents are instructed to get the
URLs and documents and send information
about them to indexing software. When you
click a link to one of the documents that
interests you, you're sent straight to
that document.

4. CONCEPT
EXAMPLE SENTENCE
Each search engine
uses a crawler or
spider with its own
set of rules guiding
how documents are
gathered.

5. QUESTION
 Is the database searched based on what?
 Which software receives the documents and
URLs from the agent?
 As the spider discovers documents and URLs,
what are instructed to get the URLs and
documents?

6. ANSWER
 Is the database searched based on what?
➔ The criteria you've set.
 Which software receives the documents and
URLs from the agent?
➔ The indexing software.
 As the spider discovers documents and URLs,
what are instructed to get the URLs and
documents?
➔ Software agents.