[Intention] This is the used to store the time at which the administrator has made the comment on feedback. [Properties] This will be generated by the database trigger. This will be generated before the update operation of the comment. Type : Date [Attribute Name] 
date_changed
f e e d b a c k _ i d
c r e a t o r
s u b j e c t
c o n t e n t
s e v e r i t y
c o m m e n t
s t a t u s
d a t e _ c r e a t e d
d a t e _ c h a n g e d