(a) A person wishing to be registered in the register or to have a registration continued under section 18 of this Act or to have the particulars in an entry in the register altered shall make an application in writing in that behalf to the Commissioner and shall furnish to him such information as may be prescribed and any other information that he may require.
(b) Where a data controller intends to keep personal data for two or more related purposes, he or she shall make an application for registration in respect of those purposes and, subject to the provisions of this Act, entries shall be made in the register in accordance with any such application,
(c) Where a data controller intends to keep personal data for two or more unrelated purposes, he shall make an application for separate registration in respect of each of those purposes and, subject to the provisions of this Act, entries shall be made in the register in accordance with each such application.
(2) Subject to subse