[Code] Xtype definitions

'C' =  CHECK constraint 
'D' =  Default or DEFAULT constraint  
'F' =  FOREIGN KEY constraint  
'L' =  Log  
'FN' =  Scalar function  
'IF' =  In-lined table-function  
'P' =  Stored procedure  
'PK' =  PRIMARY KEY constraint (type is K)  
'RF' =  Replication filter stored procedure 
'S' =  System table  
'TF' =  Table function  
'TR' =  Trigger  
'U' =  User table  
'UQ' =  UNIQUE constraint (type is K)  
'V' =  View  
'X' =  Extended stored procedure