Before you create a catalog source, ensure that you have the information required to connect to the source system.
Perform the following tasks:
•Assign the required permissions.
•Configure permissions to the service account that you use to access the Google Cloud Platform project.
•Configure a connection to the Google BigQuery source system in Administrator.
•Create endpoint catalog sources for connection assignment.
•Optionally, if you want to identify pairs of similar columns and relationships between tables within a catalog source, import a relationship inference model.