Now, you have a project with a test case, so you can add the data source to it.
Open Functional Tests and select your new test case.
To get the data for your test case, you need a data source test step.
Enter a name for the test step.
Data sources are most efficient, when you use them with a loop. ReadyAPI will suggest that you automatically generate parameter values and add a Data Source Loop to your test case. Usually, you will do that right away, but for the tutorial purposes, you will add the loop later.
Click No. Do not select Don't show again.
The data source test step will appear in the navigator.
The order is important in the test step execution, so you need the data source to come before the request that will use it.
Drag the data source above the request if needed.
Now, you can configure the test step to use a JDBC connection.