Application system environment description
With HOPEX System Oriented IT Architecture, an application system environment is described by an application system environment structure diagram that describes the interactions between the internal application systems, its users and the partner application systems.
An application system environment present an application system use context. It describes the interactions, between the application system and its external partners, which allows it to fulfill its mission and ensure the expected functionalities.
Environment diagram for the "Purchasing Requests Processing" application system.
Purchase requests are formulated by private users or by companies in different contractual conditions.
The "Purchasing Requests Processing" application system offers a loan service to its clients within the context of payment management.
The elements in this diagram are:
• application system uses that that represent the application systems internal to the environment.
In the example, this is the application system that represents the "Purchasing Management Platform".
An application system use describes the role of an application system in a composition relationship with a parent application system or in an application system environment.
• system users that represent the user category of services provided by the environment.
This concerns two customer categories: individuals and companies
A system user represents an organizational unit interacting with the boundaries of an application system environment or a logical application system environment.
• partner application systems that represent the application systems external to the application system environment described.
In this example, this concerns two loan services offered to individuals and companies.
A partner application system is an application system external to the environment of the described application service. The partner application system can be a service supplier or a service consumer with respect to application system users.
• interactions between components
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.
