Application communication diagrams

The purpose of the application communication diagram is to depict all models and mappings related to communication between applications in the metamodel entity. It shows application components and interfaces between components. Interfaces may be associated with data entities where appropriate. Applications may be associated with business services where appropriate. Communication should be logical and should only show intermediary technology where it is architecturally relevant.


Tips: Use application components to present an SOA-oriented architecture as much as possible. Different kinds of application components exist that allow them to be structured into layers. The main kind of application components are GUI (interaction), process and entity. An application architecture may be hybrid due to the legacy system or external applications. "Application" or "Database" components serve this purpose, and can be mixed with SOA-oriented service components. Application components are connected via required or provided services which are connected via connectors. Provided/required services are typed by IS services that are generally modeled elsewhere.

Application communication diagrams present either an application cartography of what already exists, or a logical architecture of the future situation. SOA-type architecture is encouraged. This type of architecture is based on service-oriented application components. Where the architecture is hybrid, a mix of (non-SOA) applications, repositories and new SOA-architectured parts can be shown.

In an SOA-oriented architecture, it is recommended that service application components be structured according to their nature and their level: components dedicated to interactions (GUI, WEB), components dedicated to process executions, and entity components which are the most stable.

Components are interconnected via their required and provided services, which are linked by connectors. These required and provided services are typed by IS services which are modeled elsewhere. The service operations provided by these services transport data (parameters) whose types are also modeled in the form of "messages".

The architecture is layered: the interaction component (site) is on top, process components in the middle, and entity components on the bottom

interaction-application-componentInteraction application component: Represents the top level components that manage the interaction with elements outside the IS. In most cases, this is a GUI component, such as here a web interface.

entity-componentEntity application component: An entity component is frequently derived from business entities, and is responsible for managing the access to the entity, and its integrity.

process-componentProcess application component: A process application component is responsible for a business process execution. It orchestrates the tasks of the process.

system-federationSystem federation: A system federation is the coarser-grained application component. It assembles systems to federate them, such as in the example of cooperation between different information systems between different companies.

utility-componentUtility component: Represents an application component that is frequently reused, and most of the cases bought off the shelf.

DataBaseApplicationComponent32Database application component: Represents a repository. In pure SOA architecture, these elements should not appear. However, for legacy analysis or technology architecture, modeling repositories or repository deployment can be useful.

applicationApplication: This Application component corresponds to legacy applications, off the shelf products, or can be an assembly of application components.

provided-servicesProvided services: Access points to application components through provided services.

required-servicesRequired services: Required services of application components need to be connected to provided services by other components.

connectorConnector: Used between provided or required services, and or instances of application components.

information-flowInformation flow: Defines the flow of any kind of information (business entity, event, product, informal, etc.) between active entities of the enterprise.

flow-linkFlow link: Flow link between data (e.g. business entity, event, product) and active elements (e.g. business process, service).

externalactorExternal actor: An actor that is external to the enterprise

consumes-linkConsumes link: Expresses that a participant (e.g. actor) consumes an element of the IS (service, operation, application component).


+2 # Someone 2013-09-24 20:18
Are these diagrams available in Visio?
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