In a schedule S having 4 transactions executed ...

In a schedule S having 4 transactions executed concurrently. The order of their operations is given below. Find out whether the given schedule is serializable or not?

T1

T2

T3

T4

R(X)

     
 

R(Y)

   
 

W(X)

   
   

W(Z)

 
     

R(Z)

   

R(X)

 
   

W(Y)

 

W(X)

     
 

W(Y)

   
   

W(X)

 
     

R(X)

     

W(Y)

Commit

     
 

Commit

   
   

Commit

 
     

Commit

(A) Conflict serializable

(B) View serializable

(C) Both (A) and (B)

(D) Not serializable

Hint: 

<div class="tex2jax"></div>

0Comment