Bunny10Bunny10isdueMonday,November25that9AM
Yourusernamewillberecordedwhenyousubmitthisform.*Required
1.
Whatisyourcourseaccount?*Pleaseenteryourcourseaccountlogin.Ifyouraccountiscs186aa,you'dentercs186aa.
2. Whatarethelast4digitsofourSID*
ARIESRecovery
Forallofthefollowingquestions,considerthelogbelow.AssumethataCRASHoccursattheendofthelog(afterLSN80).
TransactionLog
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3.
1.IfourbuffermanagerisusingaFORCE/NOSTEALpolicy,whenmustthedatawrittenatLSN03beflushedtodisk?*(DonotassumeFORCE/NOSTEALforsubsequentquestions).Markonlyoneoval.
afterLSN03,butbeforeLSN20
afterLSN03,butbeforeLSN70
afterLSN40,butbeforeLSN70
anytimeafterLSN03
anytimeafterLSN40
4.
2.P2mustbeinthedirtypagetablewrittentotheENDCHECKPOINTrecordatLSN04*Markonlyoneoval.
True
False
5.
3.Afteranalysis,whatwillthestatusofT2beinthetransactiontable?*Markonlyoneoval.
Running
Committing
Aborting
T2willnotbeinthetransactiontable
6.
4.AssumethatP1isnotinthedirtypagetablewrittentotheENDCHECKPOINTrecordatLSN04.WhichLSNswillberedone?*Markonlyoneoval.
AllupdatesandCLRsstartingwith01
Allupdates(butnotCLRs)startingwith01
AllupdatesandCLRsstartingwith03
Allupdates(butnotCLRs)startingwith03
AllupdatesandCLRsstartingwith10
Allupdates(butnotCLRs)startingwith10
7.
5.Whichupdatesand/orCLRswillbeundoneintheundophase?*Markonlyoneoval.
80,60,30,20,10,03,01
80,30,20,10,03,01
80,60,10,01
80,10,01
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