When you read data from a WebSphere MQ source, you read data from the message header and the message data components of a WebSphere MQ message. The PowerCenter Integration Service treats the message header component as message header fields. The message header fields contain information about the message on the queue. Using the message header data, you can filter messages you want to read. For example, you can read messages based on the message format, or you can filter messages that originated from a particular application.

PowerCenter treats the message data component of a message as a field containing message data. The PowerCenter Integration Service can read message data in the following formats: