title: Naming convention for unique constraint
body: <p>Naming conventions are important, and primary key and foreign key have commonly used and obvious conventions (<code>PK_Table</code> and <code>FK_Table_ReferencedTable</code>, respectively).  The <code>IX_Table_Column</code> naming for indexes is also fairly standard.</p>
  
  <p>What about the UNIQUE constraint?  Is there a commonly accepted naming convention for this constraint?  I've seen <code>UK_TableName_Column</code>, <code>UQ_TableName_Column</code>, and someone recommending <code>AX_TableName_Column</code> - I don't know where that comes from.</p>
  
  <p>I've typically used <code>UQ</code> but I don't particularly like it, and I do not enjoy having to defend my choice of using it against a <code>UK</code> advocate.</p>
  
  <p>I would simply like to see if there is a consensus on the most prevalent naming, or a good reasoning as to why one makes more sense than the others.</p>