Separation of Message Header and Message Body
The design of an EMS is usually broken down into two sections:
- Message header design – Message headers contain the information necessary to route messages. Message headers are usually coded in clear text so that intermediate nodes receive all the necessary information they need to route and prioritize the message. Message headers are analogous to the information printed on the outside of a letter (to, from, priority of message etc.)
- Message body semantics – Message body semantics include the precise definition of all of the data elements in the body of the message. Message semantics can be aided by the use of a precise data dictionary that documents metadata.
Read more about this topic: Enterprise Messaging System
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