We created a Seeker that translates OCL to SQL for searching in databases of any size. We look at derivations, constraints, and validation rules.

To make your experience smooth, we set the main tags mentioned in the video to the right bar menu of this mini-player. Choose an interesting subtitle on the list and immediately get to the exact theme navigation item place in the video. Now you can pick any topic to be instructed on without watching the whole video.

 <iframe src="https://www.youtube.com/embed/qRAsgCNKM08?rel=0&autoplay=0" frameborder="0" allowfullscreen=""></iframe>

   View Model Editor: 
    Search expressions 
    Variables and Validations 
    Derivation Attribute 
    Visible expressions 
   
 Test data: 
    Tab separated data import 
    Constraints 
    Validation Rules 
    Saving despite error warnings