XML Schema: Getting lookup tables from DB

XML_Dev,

I have a schema file that will validate large lookup tables.  I'm wanting to
include another .XSD in my main .XSD that will grab the lookup table
information.  For example: States are identified by two characters i.e. HI =
Hawaii,  instead of enumerating these state codes I want to get them from a
data base.  The state codes are easy, my issue would be codes that identify
many organizations that may change often -- can this be done using XML
Schema?

 

Regards,

/**
 *
 * @author Craig
 * @Developer
 * @Ever Vigilant!!!
 * 
 */