Besides the Microsoft SQL Server Management Studio, what software, preferably free, do you advise to use, that may show better results than the MSQLSMS when viewing object dependencies ou table relationships?
If you're a DBA, one of the most beneficial tools I've ever purchased is Red Gate's SQL Toolbelt. Specifically what you're looking for is their SQL Dependency Tracker which is part of the toolbelt or you can purchase it by itself.
I don't work for Red Gate. Just a happy customer.