ex  ( attribute_type_code ) </title></a>
<a xlink:href='#attribute_type_code'><text x='753' y='412'>attribute_type_code</text><text x='867' y='412' class='colType'>varchar(254)</text><title>attribute_type_code varchar&#040;254&#041;
Code of the attribute type to which the value refers to</title></a>
<a xlink:href='#attribute_type_code'><use id='fk' x='933' y='401' xlink:href='#fk'/><title>References dic_attribute_type ( attribute_type_code -> code ) </title></a>
  <a xlink:href='#attribute_value'><use id='u