title: EDBEngineError 'table is readonly'
body: <p>I have 3 <code>TQueries</code>: <code>qy_master, qy_detail, qy_detail2</code>, master of <code>qy_detail2</code> is <code>qy_detail</code>, master of <code>qy_detail</code> is <code>qy_Master</code>, all queries have corresponding data-sources, I placed queries in datamodule, when datamodule create I activate those queries.</p>
  
  <p>In another form I used those queries, when trying <code>'qy_detail.open'</code> it says <code>'EDbengine error : Tables is read-only'</code> but no problem when opening <code>qy_detail</code>, I don't modify SQL statements, but I don't know why this error happens.</p>
  
  <p>I also tried with <code>qy_detail.Active := True</code>; this statement also raise error, </p>
  
  <p>I used SQL Server 2005 connected via BDE and ODBC datasources. </p>
  
  <p>Please anyone help me to fix this. </p>