Relationships between database tables

Question

Hi,

 

I have an application that I am working with. This application is not very well documented and unfortunately, the database (SQL Server) has no relationships between tables. The only way to see relationships between tables is in the source code which is written in ASP.NET MVC.

 

My question is can I from source code generate a database model?

 

It would be a very good help because I am planning to implement the relationships between tables in the database. When this application was developed no one thought about implementing these relationships in the database.