Although the UML provides detailed descriptions of the semantics of each of
these modeling elements, I'll give you a layman's perspective:

The major characteristics of a package are:
- A package owns its content.
- The elements in the package are visible to elements outside of the
package. For example, you could have a package that represents a library of
reusable classes. All of these contained classes are visible to classes
outside the package.

The major characteristics of a subsystem are:
- A subsystem owns its content.
- The elements in the subsystem are NOT visible to elements outside the
subsystem.
- Access to the subsystem is provided through an interface that is realized
by the subsystem. Subsystems are often used to represent large-grained
components such as Enterprise Java Beans (EJBs), COM components and
services.

Regards,

Pete

=====================================
Peter Eeles
Architecture and Technology Team Lead
Regional Services Organization (UK)
Rational Software
Email: [EMAIL PROTECTED]
Mobile: +44 (0)7796 331061
=====================================

-----Original Message-----
From: Anil Kumar Emmadi [mailto:[EMAIL PROTECTED]]
Sent: 19 October 2001 10:49
To: [EMAIL PROTECTED]
Subject: (ROSE) Subsystem Vs Package


Hi 
Can anybody explain the differences between a subsystem and a package.

Cheers
Anil

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