1,291 views

2 Answers

1 votes
1 votes

yes it is allowed in 2PL.

0 votes
0 votes

Yes. its possible to execute the schedule in 2PL.

T1 T2 T3
 

X(A)

W(A)

X(B)

U(A)

 

X(A)

W(A)

   
 

W(B)

U(B)

 

X(B)

U(A)

   
   

X(A)

W(A)

W(B)

U(B)

   
   

X(B)

W(B)

U(A)

U(B)

Since schedule is allowed to execute in 2PL then schedule is conflict serializable schedule & conflict serial schedule is the lock point order(lock point is red colored).this way, Equivalent conflict serial schedule is T2 -> T1 -> T3

edited by

Related questions

0 votes
0 votes
2 answers
3