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no templates for ADO.NET in visual studio 2015 rc

i am learning asp.net 5 and MVC 6! i created a web project

like this picture 建立专案
after that right clicked on Models folder -> add new item but there is no ADO.Net templates here ( in VS 2013 it exist ). here is a picture : 在此处输入图片说明
this problem is only for web project, i created a Windows Application and added new item there was ADO.NET templates. here is picture :
在此处输入图片说明
how to fix this problem ?

Anyone having the same problem on any kind of project (like it was my case) and unable to open existing EDMX, be careful when you install VS 2015, and make sure to check the box saying "Microsoft SQL Server Data Tools".

I had not (we only use MySQL), and it is required for the Entity Framework designer, whatever connector you're using.

there is no support for edmx format in mvc6. Pre version mvc5 would have got but mvc 6 doesnt. Good luck

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