Kyle Brown
Knowledge Systems Corp.
4001 Weston Parkway
Cary, NC  27513

kbrown@ksccary.com

(919) 481-4000 voice
(919) 677-0063 fax

Title:

Crossing Chasms: The architectural patterns.

Abstract:

This paper is part of a large pattern language (Crossing Chasms) 
currently under development by Bruce Whitenack of The Object People 
and myself.  The pattern language as a whole addresses the issues 
faced by teams trying to build large client-server systems using 
Object Technology and Relational data stores.

This section of Crossing Chasms addresses issues faced by project 
teams who are just beginning to develop an architecture for 
client-server systems built using Object Technology.  This paper 
contains four patterns:

* Choose The Right Database investigates how a team can make the best 
choice of a persistent Object store for their project.
* Four Layer Architecture addresses how proper division of labor 
between the objects in a system can result in higher reuse potential 
and easier manageability.
* So Many Tiers addresses how objects can be best distributed through 
the machine architecture of an enterprise.
* Healthy Client demonstrates how the objects in a four layer 
architecture can be best fitted into the tiers of a two or three tier 
architecture.

Together these patterns can help a project team make the right 
decisions to arrive at an extensible, maintainable, manageable 
architecture for client-server computing.