For this discussion I am planning a database for Green Community (a hypothetical organization for this paper). Green Community is a non-violent and non-partisan organization that focuses on the damage that humans inflict on their environment. The organization exists only by virtue of its support members and donations, and never accepts contributions from either government or industry. Many experts on the environment such as biologists and ecologists have supported Green Community and this has helped to give the organization a professional expertise and a credible face. The permanent membership of Green Community includes ...