Use a Google Cloud Spanner connection to access a Google Cloud Spanner database.
Use the Google Cloud Spanner connection to import Google Cloud Spanner metadata, create data objects, preview data, and run mappings. When you create a Google Cloud Spanner connection, you define the connection attributes that the Developer tool uses to connect to the Google Cloud Spanner database.
Use the Developer tool, Administrator tool, or infacmd to create a Google Cloud Spanner connection.