The documentation portal is undergoing maintenance. During this period, you can't create any new user credentials. If you do, you'll need to recreate the user credential after the maintenance period ends.
The PowerCenter Client uses ODBC drivers and native database client connectivity software to communicate with databases. It uses TCP/IP to communicate with the Integration Service and with the repository.
The following table describes the connectivity types required to connect the PowerCenter Client to the Integration Service, repository, and source and target databases: