In this forum here , someone mentions that Entity Framework does not work with Access (Jet DB - .mdb). However it seems that there is a provider for Jet DB as described here
There is a MS Access EF 6.1 provider here https://jetentityframeworkprovider.codeplex.com/
EDIT Now the EF provider for Access is hosted on GitHub https://github.com/bubibubi/JetEntityFrameworkProvider