(iii) Who teaches a specific course and where is his/her
office?(iv) For a specific student number, in which courses is the
student
registered and what is his/her name?(v) Who are the professors
for a specjfic student?(vr) Who are the stud,ents registered in a
specific course? (16)
r
&) Disctrss about the Join order optimization and Heuristic
optimization(16)algorithms.IB. (a) Explain the Two-phase Commit and
Three-Phase Commit Protocols. (16)
Or
G) Consider the following schedules. The actions are listed in
the order they, are scheduled, and.prefrxed with the transaction
name.
' S1 : Tl:R(X), T2:RQC), T1:WC0, T2:W($, Tl:R(Y), T2:R(Y)52:
T3:WCK), T1 :R(X), T1 :Wflf, TZ:R(Z),T2:W(Z), T3:R(Z)For each of
the sched.ules, answer the following questions :(r) What is the
precedence graph for the schedule? (2)(ii) Is the schedule
conflict-serializable? If so; what are all the conflict
equivalent serial schedules? G)(iii) Is the schedule
view-serializable? If so, what are all the viewgquivalent serial
schedules? Q)
14. (a) With Suitable diagrams, discuss about the Raid Levels
(Level0, Level 1,Level 0+1, Level S, Level 4 and Level S). (16)
Or
(b) Explain the Architectural components of a Data Warehouse and
writeabout Data marts. (16)
lb. (a) Neatly write the K-means algorithm and show the
intermediate resultsin clustering the below gwen points into Two
clusters using K'meansalgorithm.P1 : (0,0), P2 : (1,10), PB :
(2,20), P4: (1,15), P5 : (1000, 2000)'P6: (1500, 1500), P7:
(1000,1250).
Or
(b) Discuss aboui the Aecess control mechanisms and Cryptography
methodsto secure the Databases. (16)
(16)
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