The Join Index category is located in the category, and can contain the following items that define how join indexes are modeled for your DBMS.
| 
                             Item  | 
                        
                             Description  | 
                    
|---|---|
| 
                             [Common items]  | 
                        
                             The following common object items may be defined for join indexes: For a description of each of these common items, see Common object items.  | 
                    
| 
                             AddJoin  | 
                        
                             Specifies the SQL statement used to define joins for join indexes. Example: Table1.coln1 = Table2.coln2  | 
                    
| 
                             EnableJidxColn  | 
                        
                             Enables support for attaching multiple columns to a join index. In Oracle 9i, this is called a bitmap join index.  | 
                    
| 
                             JoinIndex Comment  | 
                        
                             Specifies a statement for adding a join index comment.  |