Make "trigger" section:

> * Referential Integrity
>
> 	o Add MATCH PARTIAL referential integrity
> 	o Change foreign key constraint for array -> element to mean element
> 	  in array?
> 	o Enforce referential integrity for system tables
>
>
< Referential Integrity
< =====================
<
< * Add MATCH PARTIAL referential integrity
> Triggers
> ========
< * Change foreign key constraint for array -> element to mean element
<   in array?
801d804
< * Enforce referential integrity for system tables