I'm doing an Entity Framework online course in which the course uses Visual Studio in the 2012 Express version, since I'm using Visual Studio Enterprise 2015. And during the course it asks to create a new data called " service based database ". but I do not find any item of this type, the most similar item to this that appears is the " Sql Server database ", however it is not compatible with the class, I do not know if in the new versions this item has been deprecated . I would like to know what the procedure is for running the service-based database in Visual Studio 2015, and for what it is.