Following are the Steps to be followed for creating references:
i.From the "ONEi Configuration Manager " user interface Click 
on "Tool > Creation References " to create references. 
ii.A pop - up window comes on your screen  titled  "Reference 
Relation" .
iii.Type in the desired relation name.
iv.Select the two tables between which you want to create a relation.
v.Select the two columns of the tables where you want to have relation
vi.Click "Map" to draw a relation between your selected tables. 
vii.Click "Cancel" to cancel the work done. 
viii.Click "OK" to confirm the creation of reference and to go back 
to the OCM - user interface. 
