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| Subject: | [gislist] urisa journal article 1995 |
| Date: |
10/13/2004 10:40:01 AM |
| From: |
Michael Gould |
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Anyone out there give me pointers to
*Annitto*, *RN*, and *BL* *Patterson*, 1995. A new paradigm for GIS data
communications. Journal of the Urban and Regional Information Systems
Association 7(1): 64-67.
(Digital copy, author e-mail address...)?
Thanks
M Gould
Smith Travis G Civ 56 RMO/GIS wrote:
> Hi Listers,
>
> Per the excerpt below, I have a pretty good understanding of the
> three-tiered structure, however, I am pretty cloudy on the two-tiered
> structure (does it require Oracle Spatial, for example?), and how it
> works.
> Could someone please explain to me in layman's terms what the differences
> are: and maybe some of the advantages/disadvantages of each?
>
> Thanks in advance!
> Travis
>
>
> Two-tiered vs. three-tiered architecture
> At 8.1, ArcSDE for Oracle8iô and SQL Server provide two
> alternative methods of connecting to the database instanceó
> direct connection to the database instance in a two-tiered
> architecture or connecting to the ArcSDE service in a three-tiered
> architecture. If it is your intention to adopt the two-tiered
> approach then you need read no further. This guide is solely
> concerned with the administration of the ArcSDE service. Refer
> to the ArcSDE Configuration and Tuning Guide for your DBMS
> for more information regarding direct connection.
>
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--
Michael Gould
Department of Information Systems
(Depto Lenguajes y Sistemas Informaticos)
Universitat Jaume I
E-12071 Castellon (Spain)
e-mail: gould(AT)lsi.uji.es
http://www.mgould.com
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