You can access external systems from the message flows that you deploy to your integration server, and you must therefore consider the steps that you might want to take to secure that access.
You can set a user ID and password that you want the integration server to use for access to an external system or database by using the mqsisetdbparms command on a policy.
After you have defined user IDs, you must authorize those IDs so that the integration server can access your databases from deployed message flows. See the documentation for your database provider to authorize your integration node user ID.
To see how to set security authorization for a message flow node, refer to the table of properties for that specific node.
IBM® App Connect Enterprise does not provide special commands to administer databases. Discuss your database security requirements with the database administrator for the database manager that you are using, or refer to the documentation provided by your database supplier.