Chapter 12 DBMS-Specific Features

Service Broker

The service broker manages a queue of services. Applications that use Service Broker communicate by sending messages to one another as part of a conversation. The participants in a conversation must agree on the name and content of each message. PowerDesigner supports service broker through the following objects:

• Message types - define the type of data that a message can contain.
• Contracts - define which message types an application uses to accomplish a particular task.
• Queues - store messages.
• Event notifications - execute in response to a DDL statements and SQL Trace events by sending information about these events to a Service Broker service.
• Services - are specific tasks or sets of tasks.

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