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We use small, free instances of MongoDB offered by Atlas, the Cloud DBaas (Database-as-a-Service) offering from MongoDB themself. Since they are not offered via the service broker on IBM Bluemix, we created user-provided services to bind them to our apps.
MySQL
The backend application uses a MySQL provided by Bluemix (Compose). To connect to it via command line fetch the connection from the service details in the web ui UI and use the password shown for the HTTPS Connection, e.g.
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