title: How can I do multi Transaction in DBExpress
body: <p>I am using DBExpress with blackfish.</p>
  
  <p>How can I do multi Transaction? </p>
  
  <p>I have several GRIDs all in editing at once and all will have to be saved at once.
  The begin editing and post are to be determined by the end user, as he works, and in different place of the application, so difficult to do in one only transaction.</p>
  
  <p>UPDATE:</p>
  
  <p>OK the problem is that to application works in concurrency and I have to commit new data as soon as possible so that other user can have access to it. </p>
  
  <p>So the grids info as to be committed shortly after the post, or with the post.</p>