[ogsa-wg] Glossary definitions for discussion on Wednesday's telecon

[Treadwell, Jem]

Hi, the three definitions below are the last that are planned for the
OGSA Glossary v1.5, and will be discussed on Wednesday's call. Thanks to
Andreas for providing the use case and scenario definitions, and to the
OGSA-D team for data federation.

Please let me know if you have any comments.

Thanks,

- Jem

 
Data federation:

The integration of multiple services or data resources so that they can
be accessed as if they were a single service.
 

Use case:

A use case captures a contract between the stakeholders of a system
about its behavior. Different sequences of behavior, or scenarios, can
unfold, depending on the particular requests made and conditions
surrounding the requests. The use case collects together those different
scenarios.

OGSA use cases are high-level and described in a casual style. They are
not at the level of detail required for a formal requirements analysis
but are meant to provide sufficient detail to inform the architectural
definition process.

Source: "Writing Effective Use Cases," Alistair Cockburn, Addison-Wesley
Professional; 1st edition (January 15, 2000)
 

Scenario:

A use case scenario contains a sequence of steps showing how their
actions and interactions unfold.

OGSA scenarios are high-level and described in a casual style. See also
use case.

Source: "Writing Effective Use Cases," Alistair Cockburn, Addison-Wesley
Professional; 1st edition (January 15, 2000)

________________________________

Jem Treadwell
Hewlett-Packard Company
6000 Irwin Road
Mount Laurel, NJ 08054	  	  	
Phone:   856-638-6021	
Fax: 	   856-638-6190	
E-mail:  Jem.Treadwell at hp.com