Lets say I have a team, 20 developers. And we are making a project on .net. In team every one can easy create their tables according to their modules working on it.

And we think to use an ORM, can you tell me how can and which ORM tools for good to working with team. Is there any proven way?

I m asking becouse I never work with a team, so I dont know the best practices.

So you guys what kind of pattern you use?. I realy wonder.

The team members can write their unit tests and supply necessary design patterns. What kind of approach I need to create to manage team? What kind of ORM tools that we have to use?