>I'm getting my feet wet with ASP.NET MVC. I'm using MVC4, VS2012, and MVC Scaffolding. I pulled in an existing database using the provided wizard. The generated model does not include annotations like [MaxLength] or [Required]. Did I miss something or is that not a feature of the wizard? Seems like a pretty big missing feature if you ask me. Without it, I have to enter all the annotations manually if I want MVC to do the validations.

You will need to add a partial class and a metadata class :http://msdn.microsoft.com/en-us/library/cc488527(v=vs.100).aspx

Seems like a lot of hassle but if it was not done this way then you would lose any custom validation attributes when the model rebuilds...