a0b4b3a0_great_grandson_of_Husnu_Sensoy__Classical_Optimistic_Locking
[0] Cost of storage [Pessimistic Locking] Cheaper [Description] All tables to be protected via lock requires a version (change history) column which is usually a timestamp for each table row. [Classical Optimistic Locking] 
More expensive
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
A Locking Mechanism in Oracle 10g for Web Applications | The great grandson of Husnu Sensoy
Classical Optimistic Locking