@Author: Medhanie Weldemariam @Date: January 21, 2019 @Place: Toronto, ON

In this module, I implemented an Entity Framework data layer.
The Entity Framework layer implements the IDataRepository interface in Part 3; which means that this interface can be used interchangably with the ADO data layer in part 3 of same project.

References I used

[Introduction to Entity Framework] (https://msdn.microsoft.com/en-us/library/aa937723(v=vs.113).aspx)

[Entity Framework] (https://docs.microsoft.com/en-us/ef/)

[Entity Framework Fluent API - Relationships] (https://msdn.microsoft.com/en-us/library/jj591620(v=vs.113).aspx)

[Entity Framework Add and Attach and Entity States] (https://msdn.microsoft.com/en-us/library/jj592676(v=vs.113).aspx)