		Mastering Intranet and Internet Technology

Data Search and Retrieval

All data on the Internet is kept in a file somewhere. To access or retrieve that data we may take a copy of a file in full or use some management program to retrieve and send us the information required.

Databases
Text or Graphical?
File Names
File Types
Moving Files
METHOD
Other Clients
Archie via Email
Archie Communications
Archie as a Publisher
WWW Search Engines

Databases

Gopher (and Veronica)
Archie
WAIS
WWW Interfaces

Text or Graphical?

Traditionally data was stored in text based systems

Latest systems store graphics, and audio and video clips.

File Names

System Characters Case
Sensitive Spaces

Unix 24/256 YES no

Macintosh 27 not allowed

DOS/Windows 8.3 not no

OS/2 HPFS 254 not no

Windows 95 256 not allowed

Windows NT 256 some allowed

System	Characters	Case Sensitive	Spaces
Unix	24/256	YES	no
Macintosh	27	not	allowed
DOS/Windows	8.3	not	no
OS/2 HPFS	254	not	no
Windows 95	256	not	allowed
Windows NT	256	some	allowed

File Types

See Some Common File Extensions in the Appendix.

Moving Files

FTP
NFS
Email
Newsgroups
Method
1. Search, THEN
2. Retrieve
Other Clients
- Gopher
- WWW

METHOD

Other Clients

Archie via Email

Archie Servers
Email Message Content
Results Returned by Email

Archie Communications

Information
Comments
Local Archie Administrator
Mailing List
Newsgroup

	Web Author: Geoff May	Last Update: 26/04/00
	© Copyright 1997 - 2000 by Network Business Services Pty Ltd. All Rights Reserved.