The operator class identifies the operators to be used by the index for that column. For example, a B-tree index on the type int4 would use the int4_ops class; this operator class includes comparison functions for values of type int4.

Create a Operator Class

To create a operator class :

1. Select the Database in the Tree View and select Others > Operator Class from the toolbar
   
2. Press the New Operator Class button
   
3. Enter Operator Class properties and fields on the appropriate tabs of the New Operator Class Editor
4. Click OK

Design a Operator Class

To design a operator class:

1. Select the Database in the Tree View and select Others > Operator Class from the toolbar
2. Select the operator class you want to design.
   
3. Press the Design Operator Class button.
   
4. Edit Operator Class properties and fields on the appropriate tabs of the Design Operator Class Editor
5. Click OK
   

Delete a Operator Class

To delete a operator class:

1. Select the Database in the Tree View and select Others > Operator Class from the toolbar
2. Select the operator class you want to delete.
   
3. Click the Delete Operator Class button.
4. Confirm deleting in the dialog window.