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LevelMaster in Data Science (SMS, TU)
SubjectDatabase Management Systems
Year2082 BS
Exam sessionSecond Assessment · Set page 9; Second Assessment 2082
Full marks45
Time allowed120 minutes
Questions10, all with step-by-step solutions
A

Group A

5 questions·3 marks each
1Short answer3 marks

Describe any one RAID Level.

raid
2Short answer3 marks

Differentiate between supervised and unsupervised algorithm.

supervised-unsupervised
3Short answer3 marks

Explain any three Codd's rule.

codd-rules
4Short answer3 marks

Explain the concept of DDL and DML.

ddldml
5Short answer3 marks

Explain weak entity set.

weak-entity
B

Group B

5 questions·6 marks each
6Long answer6 marks

Explain different data warehouse schemas.

data-warehouse
7Long answer6 marks

Convert the table to 3 NF.

emp_idemp_nameemp_zipemp_stateemp_cityemp_district
1Hira2005State5C1D1
2Kanti5780state2C2D2
3Bishal2005State5C3D3
4Pushpa2290state4C4D4
5Indira85009state3C5D4
normalization3nf
8Long answer6 marks

Explain any one method of concurrency control.

OR

Which of the following schedule is (conflict) serializable? For each serializable schedule, determine the equivalent serial schedules. a) r2(X):r1(x):w2(x):r1(y):w1(x)r2(X) : r1(x) : w2(x) : r1(y) : w1(x) b) r2(x):r1(x):r3(x):w1(x):w2(x):w3(x)r2(x) : r1(x) : r3(x) : w1(x) : w2(x) : w3(x)

concurrency-controlserializability
9Long answer6 marks

Differentiate between classification and clustering. Explain the applications of clustering.

OR

Provided the following schema, write relational algebra

Patient(PID, Pname, Paddress, Pgender, disease) Doctor(DID, Dname, Daddress, Department, salary) Appointment(PID, DID, time)

a) List all the patients who were checked by doctors Maila and Sarthak. b) List name and id of doctors whose salary is less than Rs. 50,000. c) Display female patients who were checked by doctor Maila in day time only.

classification-clusteringrelational-algebra
10Long answer6 marks

Write short notes on a) Spatial database b) ACID

spatial-databaseacid

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How many marks is the Master in Data Science (SMS, TU) Database Management Systems 2082 paper?
The Master in Data Science (SMS, TU) Database Management Systems 2082 paper carries 45 full marks and is meant to be completed in 120 minutes, across 10 questions.
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