This Component is used to link between master tables and their details according to a specific foreign key in the detail table that is linked with the edit in the component and the lookup property is linked to the master datasource and to the primary key of that table so that by pressing on the button in the component the record in the master is browsed on the same record of the foreign key in the detail..
Moreover, there is an option that yuo can use this component as a normal dbedit, by setting showbutton property to false.. also one can select diffderent iteos to be displayed on the edit with a fixed mask...