Why Microsoft.Data.* as namespace rather than System.Data?

[weitzhandler]

Why is the namespaces under Microsoft.Data.* rather than System.Data.*?

Problem and painful when upgrading existing code.

[rowanmiller]

This is to be consistent with other frameworks (such as ASP.NET). Moving to EF7 is more of a port scenario than an upgrade so changing namespaces also helps convey that you are really targeting different objects than EF6.

[weitzhandler]

Will it eventually change to System.* after release etc?

[rowanmiller]

No, they will stay as Microsoft.*. This is consistent with what other technologies that are not part of the BCL have done.