Deep Web Diagram

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Using the Metaphor of the “Deep” or “Invisible” Web
Diagram by
Kim Duckett – NCSU Libraries
Scott Warren – Syracuse Library
Web Search Engines –
Google, Yahoo, etc.
World Wide Web – Millions of web pages!
Web Search Engines –
Google, Yahoo, etc.
World Wide Web – Millions of web pages!
This is the surface of the Web
Web Search Engines
Google can’t reach into the Deep Web directly,
but can point you to pages that go deeper.
The Deep Web
Web Search Engines
World Wide Web – Millions of web pages!
Web pages containing search tools (DATABASES)
Silos of Information
$
$
free!
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free!
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$
free!
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$
$
free!
Google Scholar
Academic content from .edu
web domains
Summaries of scholarly articles
from publishers
book citations, etc.
Journal Publishers open access
to their silos
Ejournals / Library catalogs
$
$
free!
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free!
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$
free!
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$
free!
$