title: How do I call a script when a table's data changes in Sybase 12.5?
body: <p>OS is UNIX. I'd like to call a shell script to do external validation when the data in a table changes. Is it possible, and if so how.</p>
  
  <p>Many thanks.</p>
  
  <hr>
  
  <p>Updated: Ideally, I would like to call my external script once for any discrete operation: i.e.</p>
  
  <ul>
  <li>update... > call script once</li>
  <li>insert into... > call script once</li>
  <li>bcp into > call script once</li>
  </ul>