ttribute type dictionary table&#046; Contains information about the attribute types&#046;</title></a>
  <a xlink:href='#gid'><use id='pk' x='737' y='221' xlink:href='#pk'/><title>Primary Key  ( gid ) </title></a>
<a xlink:href='#gid'><text x='753' y='232'>gid</text><text x='905' y='232' class='colType'>serial</text><title>gid serial not null
Unique attribute type identifier</title></a>
  <a xlink:href='#code'><use id='unq' x='737' y='236' xlink:href='#unq'/><title>Unique Index  ( code ) </title></a>
<a xlin