gid serial not null
Unique hazard identifier</title></a>
  <a xlink:href='#code'><text x='603' y='112'>code</text><text x='717' y='112' class='colType'>varchar(254)</text><title>code varchar&#040;254&#041;
Identifier for the hazard type</title></a>
  <a xlink:href='#description'><text x='603' y='127'>description</text><text x='717' y='127' class='colType'>varchar(254)</text><title>description varchar&#040;254&#041;
Short textual description of the hazard type</title></a>
  <a xlink:href='#extended_descripti