Relationship information is collected on the Census form to enable family and household coding to be done. The relationship question asks 'What is the person's relationship to Person 1/Person 2'. Response categories for this question include husband or wife, de facto partner, child, step child, brother or sister, unrelated flatmate or co-tenant, or other relationship as specified. Children can be children of Person 1 or Person 2 only, or of both Person 1 and Person 2. Where the relationship is other than child, the relationship to Person 1 only is specified.
See also Family, Family/Household Reference Person Indicator (RPIP), Household, Relationship in Household (RLHP).