As you're probably aware, an Entity Framework model is stored in a single XML file, with the extension EDMX. Developers occasionally ask if this means that two people cannot work on the entity model concurrently. My answer to this is, "It depends." But I can give you some tips to make it easier. Obviously, if you use a source control tool which locks files on check out, then working concurrently on just about anything will be impossible. So I'm going to presume that your source control tool s...