I want to highlight a minor usability improvement built into v15.2 for our Entity Framework fans. This is all about a simpler integration of complex types without keys (learn more from EF docs...).
The situation is already pretty much summarized in the Support Center, and here I just want to re-post the main details. To begin with, consider the following EF classes:
Note that the Range class has no key property and Entity Framework does not map this class to a separate database table. By default, properties of such a class persist in the table mapped to the parent Product class, where the Range type property is declared. So, the Product table will have the ID, Name, PriceRange_Low and PriceRange_High columns: