Logical Application System Component Description
A logical application system diagram describes the internal structure of the system:
• services offered or required
• processes handled, components and interactions
• end users interacting with the software components
The following diagram describes the logical application system for customer shopping cart management.
"Management Shopping Cart" logical application system structure diagram
A logical application system diagram is built on the same principle as an application system structure diagram.
A logical application structure diagram includes:
• d’end users
The end user represents an organizational unit interacting at the boundaries of an application system or a logical application system.
• application system environment
The use of a logical application system describes the role of a logical application system in a composition relationship with a parent application system or in a logical application system environment.
• logical application components
A logical application component describes the role of a logical application in a composition relationship with a parent logical application or a logical application system.
• interactions between the components representing requests for services
An interaction represents a contract established in a specific context between autonomous entities that are internal or external to an enterprise. These entities can be enterprise org-units, applications, activities or processes, as well as external org-units. The content of this contract is described by an exchange contract.
• service points
A service point is a point of exchange by which an agent offers a service to potential customers.
• request points
A request point is a point of exchange by which an agent requests a service from potential suppliers.
For more details on creating components of this diagram, see "Describing Application System Components".