SQL / replacement of users file

Hello list! I think I have an easy one here. I currently am administering several Radius sites for Dynamic VLAN access based on the user id's (HW Address) of workstations. I am wanting to make this process easier to handle and import this data into a SQL database so that I can manage my clients more effectively than using a text based file for the network access control. Is this possible? Can SQL store the appropriate RADIUS information (VLAN ID tags, MAC Address, and Identifiers) so that I don't need to use the USERS file any longer? Any pointers would be greatly appreciated! Thank you all! James