I need a field (column) of my database to update automatically. For example, the field NUMBER for each record incrementing every minute. How can I do it? I am using SQL Server.
You're probably looking for something called SQL Server Agent jobs
here is a good starting point reference:
http://technet.microsoft.com/en-us/library/ms181153(v=sql.105).aspx
This allows you to run some sql code on a schedule of your choosing.
P.S.
If you have access to sql server management studio, the GUI is much nicer.