PostgreSQL
Choose PostgreSQL when your application is designed around relational tables, SQL queries and structured relationships.
Run PostgreSQL, MongoDB or Redis without turning database-server administration into another job. Choose an engine first, then compare the available monthly plans.
You do not need to choose a server size before choosing the database technology. Start with the engine, then select the plan.
Relational database hosting for applications and structured workloads.
Document database hosting for applications that use flexible document-oriented data.
Managed in-memory cache and queue service with persistence options on higher plans.
Choose PostgreSQL when your application is designed around relational tables, SQL queries and structured relationships.
Choose MongoDB when your application is built around document-oriented collections and flexible document structures.
Choose Redis for low-latency caching, queues and short-lived application data rather than as a general replacement for a primary database.