One of the challenging pieces of creating an application in the cloud is where your data is stored and then have an easy way to load, update and delete data. In the traditional model you would have some kind of web server and a database server to access and store the data and then services to actually interact with the data from a mobile device. With the introduction of BlueMix this process is very simple and developers can get up and running very quickly – see the referenced articles below from developerWorks.
MobileData is a cloud based service that is available on BlueMix and is bundled in the Mobile Cloud boilerplate application.
The Mobile Data service is cloud storage service that provides a native feel for storing mobile data, while the management and implementation of the data store is hidden. –link
Check out the videos and tutorials to see this service in action:
Reference Articles –