Version Table in SQL

Question

Hi All,

 

I Have a 2 questions, 

 

1. Is it possible to Version Table in SQL Server and Mark that table(s) as Open for modification or closed for modification when presented in UI using C#  ? i.e Versioned Table will need to have a Version Status to show if table in DB is Open/Closed for Modification

 

2. Is it possible  to have Version-ID to primary key of the table?