title: Update value in oracle form
body: <p>I have a database table <code>Land</code> with colums: </p>
  
  <p><code>serial, seller_name, sell_date, sell_price</code></p>
  
  <p>I am using a datablock named <code>land</code>. To update the table I am using the same datablocks field. I am using a lov to take the already saved values and I am dropping those values in the datablock <code>land</code>.</p>
  
  <p>I want to update the values based on the serial number. I am using on <code>button pressed trigger</code> under a button and used the <code>commit_form</code>. But every time new data is inserted with the same serial number. I am looking for a way to update the table for that specific serial number.</p>