Table: object (generic object)
   ------------------------------
    id
    type_id
    status
    parent_id
    creator_id
    created
    last_modified

  Table: notice (adds notice specific fields to the object table)
  ---------------------------------------------------------------
    id (1 to 1 relationship with object.id)
    notice_type (ie wedding, funeral, birth etc)
    title
    content
    etc

  Table: charity (adds charity specific fields to the object table)
  -----------------------------------------------------------------
    id (1 to 1 relationship with object.id)
    name
    description
    url
    etc