Information Technology Reference
In-Depth Information
Application
under devel
Tier 1— client functionality:
Menus
Data entry
Data display
Connectivity
Data
resources
Security
Operating
system
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Tier 1-Tier 2
connectivity
Application
under devel
Tier 2—server functionality:
Log on/log off
Data storage
Business rules
Reporting
Backups
Archiving
Connectivity
Data
resources
Security
Operating
system
Prelim
analysis
and design
Prelim
construction
Final
construction
Ship or
Install
Postimplement
Figure 14.6
Second step in 2-tier test planning
available on the tier 1 client. The problem with testing the client fi rst and the server
second arises as soon as the fi rst defect is discovered. The diagnostic challenge is to
determine which tier (if not both tiers or both tiers and the connectivity) is the source
of the defect. Extraordinary resources from both the test team and the development
team can be consumed diagnosing defects under these circumstances.
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