Explain Triggers in detail.

Triggers establish subscriptions to publishable document types and specifies how to process instances of those publishable document types. When you build a trigger, you create one or more conditions. A condition associates one or more publishable document types with a single service. The publishable document type acts as the subscription piece of the trigger. The service is the processing piece. When the trigger receives documents to which it subscribes, the Integration Server processes the document by invoking the service specified in the condition. Triggers can contain multiple conditions.

* The trigger contains at least one condition.

* Each condition in the trigger specifies a unique name.

* Each condition in the trigger specifies a service.

* Each condition in the trigger specifies one or more publishable document types.