What is Premium Databases
Premium Databases are not typically connectible from GSuite environment using Apps Script. But a special implementation and infrastructure is prepared by Jivrus for supporting these type of databases.
Premium Databases are accessible only to Premium or above plans. Check pricing for details
Supported Premium Databases
MongoDB is a cross-platform document-oriented database program. Classified as a NoSQL database program
PostgreSQL, also known as Postgres, is a free and open-source relational database management system emphasizing extensibility and SQL compliance.