[amtamt]

from https://thedailywtf.com/articles/directive-595

Dear Database Architect,

Directive 595 Part 2 is as follows.

  "Foreign and Primary Key constraints give lack of flexibility, more 
   costly evolution, inhibit the use of the database acting as a 
   service to applications and make it an inhibitor to evolution."

As such, please remove from all production databases.

Sincerely, Chief Architect Gerald