One Stop GATE Forum: TEST01 :Q16 View/conflict Serialization

Message

    Q16: 
The given sequence is 

R(x)-T2 
R(y)-T3 
W(x)-T3 
W(x)-T2 
W(x)-T1 
R(z)-T3 
W(y)-T2 
W(z)-T1 

ans from gateforum is D, ie view but not conflict serializable!!! 
above schedule is not conflict Seri. is true. 
But how it is view serializable?? 
as per the view serial. properties, 
it is not at all possible to have any serial schedule for above. 

please let me know is above schedule is view or not!!! 
if it is,then which serial sequence it is equivalent to?? 

Author	Message
balu Senior Member Joined: 20Feb2007 Online Status: Offline Posts: 236	Topic: TEST01 :Q16 View/conflict Serialization Posted: 23Feb2007 at 2:56pm
	Q16: The given sequence is R(x)-T2 R(y)-T3 W(x)-T3 W(x)-T2 W(x)-T1 R(z)-T3 W(y)-T2 W(z)-T1 ans from gateforum is D, ie view but not conflict serializable!!! above schedule is not conflict Seri. is true. But how it is view serializable?? as per the view serial. properties, it is not at all possible to have any serial schedule for above. please let me know is above schedule is view or not!!! if it is,then which serial sequence it is equivalent to?? Post Resume: Click here to Upload your Resume & Apply for Jobs

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