Before you create a test data warehouse, you must configure a relational database for the test data warehouse.
The test data warehouse is a relational database that stores the source data that you include in a data set.
Set up the database before you create the Test Data Warehouse Service. Allocate 35 MB or more space based on the number of objects you plan to store. You can create a test data warehouse on the following databases:
Oracle
PostgreSQL
For more information about configuring the database, see the documentation for your database system.