Rules :
- Initial Read must be same
- There is W-R dependency
- Final write on some item should be same
There are 4 Write-Read conflict .
- W1-R4 on B ,
- W1-R2 on B
- W2-R5 on C
- W4-R5 on E
Transaction T5 is performing final write on items B , and it is fixed .
Initial Read is done by T1 on A.
so all 3 rules are satisfying here.
--------T1------- T2-------T4--------T5--------(T3 can be placed anywhere).....
--------T1------- T4-------T2--------T5--------(T3 can be placed anywhere)....
Therefore, total orderings = 5 +5=10 .