OpenStack released the latest version, Icehouse, the concept of Database as a Service (DBaaS). Tesora's goal is to help organizations to create and deploy database-based OpenStack applications who don't have a great deal of expertise with database administration. The focus is to make database just another service rather than a central focus. To know more on OpenStack Icehouse, go through the article by Daniel Kusnetzky, a reformed software engineer and product manager.
http://www.zdnet.com/tesora-database-as-a-service-and-openstack-trove-7000028821/