Hello Mr. Arshad,
As far as my understnding of Rose & UML goes, I can tell you that if
you interact with some other system for Authorization, Approval etc. for
which you pass some value and get a response you need to treat is as an
actor, since that System is a black box for you. You don't know what happens
inside that system.
So in your example Credit Authorization Service should be treated as
an actor.
Hope it helps you.
With Regard's
Ajay Kumar Mishra,
Senior Systems Analyst,
-----Original Message-----
From: Dr. Arshad Ali Shahid [mailto:[EMAIL PROTECTED]]
Sent: Thursday, October 04, 2001 11:19 AM
To: '[EMAIL PROTECTED]'
Subject: (ROSE) Actor Modeling
Hi..
As per understanding every entity participating in an interaction with a
system in a use case should be modeled as Actor.
Looking at an example given in the book "Applying UML...." by C. Larman, two
actors "Customer" and "cashier" are shown in a use case "Buy Item". But as
course of events shown below the "Credit Authorization Service" is also
involved in the process. How to model it? as an actor? (as it is shown in
the actor action column.
Actor Action System Response
3. Credit Authorization Service authorizes 4. Receives a credit approval
the payment. Reply from the
Credit Autho
rization
Service(CAS).
Can anybody clarify. Thanks in advance.
------------------------------
Arshad Ali Shahid
Professor of Computer Science
FAST National University
Islamabad
------------------------------
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