Add site table FK from site.created_by to usr.id. FK from site.updated_by to usr.id. Create role map table for site. Add PK for site_rm. Add FK from site_rm to rm_entry.id. Add FK from site_rm to site.id. Create an index for the FK column site.rm_entry_id Add site_page table FK from site_page.site_id to site.id Add a system role (in rm_role) for Site Administrator. Add a system role (in rm_role) for Site Editor. Add a system role (in rm_role) for Site Auditor. Add a system role (in rm_role) for Site Viewer.