*** 155,161 **** on the column is not needed and will never be used. In addition it will slow INSERT, DELETE and UPDATE operations down.</p> ! <h2>Use transactions when updating tables</h2> <p>Make sure that you wrap up all multiple updates inside a transaction, e.g.:</p> --- 155,161 ---- on the column is not needed and will never be used. In addition it will slow INSERT, DELETE and UPDATE operations down.</p> ! <a name="trans"><h2>Use transactions when updating tables</h2></a> <p>Make sure that you wrap up all multiple updates inside a transaction, e.g.:</p>