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[Jaouad-Jaghrir]

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[maxceem]

Thanks for final fixes @Schpotsky. Most them works well. There are only 2 tasks require some improvements:

1. New command to make the column NOT NULL doesn't work:

   

   Also, I've noticed that other SQL commands don't work also:

   

   

   

2. You've removed checking if delete has been called in DELETE endpoint when the link is removed. Instead of this, could you please keep this code in unit test, but check that delete is NOT called for link:

   

[maxceem]

All works good now, thanks @Schpotsky