March 2004
Intermediate to advanced
440 pages
11h 46m
English
book
DB2 UDB V8 and WebSphere V5 Performance Tuning and Operations Guide
by Whei-Jen Chen, Peter Z He, Kang Yong Ying, Andreas Paulsen, Sunminder S Saini
Content preview from DB2 UDB V8 and WebSphere V5 Performance Tuning and Operations Guide
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Chapter 2. Overview of WebSphere Application Server V5 29
can be mapped to existing databases or to new tables. The EJB tier incorporates
all aspects of the business logic, including the process flow.
The core of application functions and data represented by Tier-2 and Tier-3 in the
figure can then be accessed in a variety of ways. They can be accessed by
traditional “thick” clients, which are represented by the Tier-1 clients in the figure.
Typically, these clients require highly functional and rich GUIs, and access the
enterprise applications within the company's firewalls, that is, within the Intranet.
Applications can be accessed from the outside world, through the Internet, either
via a browser-based interface (represented by the Ti ...
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