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[Mahara Bot <1785985@xxxxxxxxxxxxxxxxxx>]

Patch for "master" branch: https://reviews.mahara.org/9710

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https://bugs.launchpad.net/bugs/1785985

Title:
  Remove triggers from Mahara database

Status in Mahara:
  In Progress

Bug description:
  I've created a forum post to discuss this:

  * https://mahara.org/interaction/forum/topic.php?id=8324

  Basically, my reasoning is:

  
  1. Mahara supports two DB types - MySql and Postgres. Each DB has different syntax when it comes to creating/updating/deleting triggers. This makes it complicated to develop and maintain.

  2. Mahara already has the concept of events in place. We can move the
  functionality of each trigger into an event. We would then have more
  control over the event. For example, don't action an event during an
  upgrade.

  3. Triggers make it difficult to see what is actually happening. They
  are not transparent. If you weren't aware that there is a trigger on
  the table, it can make it difficult to track down why something is
  behaving in a certain way.

  
  We can start slowly by removing one at a time. It doesn't have to happen all at once.

  Just my thoughts.

  Cheers.

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