7.1 Overview [Dido Solutions, Inc Wiki]

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====== 7.1 Overview ======
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The Logical Communication Model defines how [[dido:99_annexes:annex-b-terms-and-definitions:l:logical_node|Logical Nodes]] exchange information through explicit [[dido:99_annexes:annex-b-terms-and-definitions:l:logical_communication_endpoint|Logical Communication Endpoints]].

This model specializes the Part 1 concept of [[dido:99_annexes:annex-b-terms-and-definitions:c:communication_endpoint|Communication Endpoint]] into platform-independent logical communication structures and roles. It describes who participates in an exchange, what information the exchange carries, which [[dido:99_annexes:annex-b-terms-and-definitions:r:runtime_plane|Runtime Plane]] the exchange supports, and what [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|Traceability]] or [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|Evidence]] expectations apply.

The Logical Communication Model does not prescribe one communication technology or interaction style. Implementation profiles select mechanisms such as DDS, REST, RPC, Protocol Buffers, message queues, event streams, file exchange, shared services, or other mechanisms to realize logical communication.

Figure 7-1 summarises the primary relationships in the Logical Communication Model.
  Logical Node
  ├── uses Logical Communication Endpoint
  │   └── carries Logical Data Structure Instance
  │       └── conforms to Logical Data Structure Definition
  └── performs Communication Role
      ├── Publisher Role
      ├── Subscriber Role
      ├── Requester Role
      ├── Responder Role
      ├── Command Producer Role
      ├── Command Consumer Role
      ├── Event Producer Role
      └── Event Consumer Role
Figure 7-1:	Primary relationships in the Logical Communication Model



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