a0b4b3a0_great_grandson_of_Husnu_Sensoy__Classical_Optimistic_Locking
[0] Addition of a column for version control [Pessimistic Locking] No [Description] Optimistic lock is based on version controlling so you need somewhere to keep version of each row. [Classical Optimistic Locking] 
Yes
H a r d e r
M o r e e x p e n s i v e
U s u a l l y m o r e c o m p l e x
N o
3 - t i e r a r c h i t e c t u r e
L o w e r
Y e s