17 Sep 2003
CS 6210 – Module 6
18
Distributed Search? Why?
“Surface” Web vs. “Hidden” Web
l“Surface” Web
–Link structure
–Crawlable
–Documents indexed by search engines
l“Hidden” Web
–No link structure
–Documents “hidden” in databases
–Documents not indexed by search engines
–Need to query each collection individually
- From Panos Iperiotis’
VLDB presentation