1. Relentless Distribution
an introduction to
client/server systems

2. objectives define client/server computing
describe evolution and characteristics of c/s systems
discuss technical and managerial strategies for c/s systems

3. what is client/server? a buzzword... an architecture …
a way of life...
problem:
how can we most effectively deliver services and access to resources in a distributed computing environment?
I’ll start off by defining Object technology, then I’ll describe Sybase’s solution, including Sybase’s object relational database, the Adaptive Server.

4. managerial issues connectivity... ...in the face of diversity
availability...
...while distances expand
performance...
...yet increasing demand

5. client/server evolution
Master-Slave Computing
late 1970’s
Proliferation of PCs
desktop vs client/server
1980’s
Local Area Networks (LANs)
1990’s
Client/Server Systems
2000’s ?

6. getting wired LAN WAN Internet intra, extra, yada, yada…
workstation + file server
WAN
Internet
intra, extra,
yada, yada…

7. 3-tier client/server
Databases
Legacy
Systems
Thin Client
Rich Client

8. physical architecture
database
server
application
servers
presentation
servers

9. characteristics of c/s systems
availability
24 X 7 information utility
scalability
able to grow (or shrink) with business needs
security
control over access to information resources
diversity
heterogeneous (mix-and-match) platforms
specialization
focused roles allowing layered services
transparency
location and machine independence

10. server specialization
well established distribution techniques...
file server
print server
database server
and newer approaches...
application server
groupware server
web server

11. summary defined client/server computing
described evolution and characteristics of c/s systems
discussed technical and managerial strategies for c/s systems