Configure databases to hold application or business data that you can access from your message flows.
Databases that hold application or business data are read from and written to by nodes within the message flows that you deploy to one or more brokers in your domain.
In some situations, and for some applications, you might need to ensure the integrity of the data that you hold in databases across multiple systems and resource managers by coordinating table updates and the writing to one database with the deletion of data in another. To achieve these goals, you must configure your databases, your brokers, and your message flows to be globally coordinated.
For more information about the requirement for, and set up of, databases, and the restrictions that apply, see Databases overview.
The process of making databases available has the following phases:
On distributed systems, the WebSphere® MQ queue manager is the transaction manager that interacts with the resource managers (the database providers). On z/OS®, RRS provides equivalent coordination.
To complete these phases: