Explain the Service Broker components

Answer 1

The following are the components of Service Broker:

Message:
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The basic unit of information that is transferred in a Service Broker application. These are received by Service Broker, the way they are sent and are guaranteed only for sending and receiving one at a time.

Conversation:
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After sending a message to Service Broker, a conversation, which is created for a particular task and deleted soon after the ask has been completed. It is the primary information exchange construct in Service Broker.

Queue:
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All messages are stored in a queue till the processing is completed. It is a special type of table which can be viewed only with SELECT statement on the name of the queue and INSERT, DELETE, UPDATE statements can not be issued. These messages on a queue will certainly persists even a server restarts, thus guarantees the non-loss of the message.

Service:
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Reading a messages and processing them is the action of service component. It can be a stored procedure or an ad hoc, or a different program which connects to the database server. Every services need to be associated with a queue.

Conversation Groups:
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The message processing is serializes and correlates the messages by using conversation groups. Each conversation is a member in a conversation group. The core concept is, some of the messages are related to other messages, and the conversation group puts them together in an ordered fashion.