The Extended Object category is located in the category, and can contain the following items that define how extended objects are modeled for your DBMS.
| 
                             Item  | 
                        
                             Description  | 
                    
|---|---|
| 
                             [Common items]  | 
                        
                             The following common object items may be defined for extended objects: For a description of each of these common items, see Common object items.  | 
                    
| 
                             AlterStatement List  | 
                        
                             Specifies a list of text items representing statements modifying the corresponding attributes  | 
                    
| 
                             Comment  | 
                        
                             Specifies the syntax for adding a comment to an extended object.  |