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Code No: R05410410 R05 Set No. 2

IV B.Tech I Semester Examinations,December 2011DATABASE MANAGEMENT SYSTEMS

Common to E.COMP.E, ETM, E.CONT.E, EIE, ECETime: 3 hours Max Marks: 80

Answer any FIVE QuestionsAll Questions carry equal marks

? ? ? ? ?

1. (a) Explain about 4 Nf? Give one example.

(b) Explain about 5 Nf? Give one example. [8+8]

2. (a) Explain about Disk Space management in detail.

(b) Explain about Memory hierarchy. [8+8]

3. (a) How is check point done in ARIES [6]

(b) Can a second end check point record be encountered during analysis phase.[4]

(c) why is the use of CLRS important for the use of UNDO actions that are notthe physical inverse of the original update. [6]

4. (a) Describe about the three levels of Data Abstraction.

(b) What is Data Independence? Explain the two levels of Data Independence.[8+8]

5. (a) Explain how concurrency execution of transactions improves overall systemperformance.

(b) What are the transaction isolation Levels in SQL? [8+8]

6. For the following relational database, give the expressions in SQL.Sailor schema (sailor id, sailorname, rating, Age)Reserves (sailor id, Boat id, day)Boat Schema(Boat id, boatname, color)

(a) Find the age of the youngest sailor who is eligible to vote(i.,e. 18 years) foreach rating level with at least two such sailors?

(b) Find the no of reservations for each red boat?

(c) Find the average age of the sailors who are eligible for voting for each ratinglevel that has at least two sailors?

(d) Find the names of sailors who have reserved boat name 103.

(e) Find the sailor id of sailors who have reserved a red boat.

(f) Find the colors of boats reserved by the sailor Lubber?

(g) Find the average age of sailors who has rating of 10?

(h) Find the names of sailors who have reserved both a red and a green boat?[16]

1

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Code No: R05410410 R05 Set No. 2

7. Explain about Fixed-Length file organization with an example. [16]

8. (a) What is the difference between a candidate key and the primary key for agiven relation? What is a super key?

(b) Explain the statement that relational algebra operators can be composed.Why is the ability to compose operators important? [8+8]

? ? ? ? ?

2

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Code No: R05410410 R05 Set No. 4

IV B.Tech I Semester Examinations,December 2011DATABASE MANAGEMENT SYSTEMS

Common to E.COMP.E, ETM, E.CONT.E, EIE, ECETime: 3 hours Max Marks: 80

Answer any FIVE QuestionsAll Questions carry equal marks

? ? ? ? ?

1. (a) Explain about Disk Space management in detail.

(b) Explain about Memory hierarchy. [8+8]

2. (a) Explain about 4 Nf? Give one example.

(b) Explain about 5 Nf? Give one example. [8+8]

3. (a) What is the difference between a candidate key and the primary key for agiven relation? What is a super key?

(b) Explain the statement that relational algebra operators can be composed.Why is the ability to compose operators important? [8+8]

4. (a) Describe about the three levels of Data Abstraction.

(b) What is Data Independence? Explain the two levels of Data Independence.[8+8]

5. (a) How is check point done in ARIES [6]

(b) Can a second end check point record be encountered during analysis phase.[4]

(c) why is the use of CLRS important for the use of UNDO actions that are notthe physical inverse of the original update. [6]

6. Explain about Fixed-Length file organization with an example. [16]

7. For the following relational database, give the expressions in SQL.Sailor schema (sailor id, sailorname, rating, Age)Reserves (sailor id, Boat id, day)Boat Schema(Boat id, boatname, color)

(a) Find the age of the youngest sailor who is eligible to vote(i.,e. 18 years) foreach rating level with at least two such sailors?

(b) Find the no of reservations for each red boat?

(c) Find the average age of the sailors who are eligible for voting for each ratinglevel that has at least two sailors?

(d) Find the names of sailors who have reserved boat name 103.

(e) Find the sailor id of sailors who have reserved a red boat.

(f) Find the colors of boats reserved by the sailor Lubber?

3

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Code No: R05410410 R05 Set No. 4

(g) Find the average age of sailors who has rating of 10?

(h) Find the names of sailors who have reserved both a red and a green boat?[16]

8. (a) Explain how concurrency execution of transactions improves overall systemperformance.

(b) What are the transaction isolation Levels in SQL? [8+8]

? ? ? ? ?

4

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Code No: R05410410 R05 Set No. 1

IV B.Tech I Semester Examinations,December 2011DATABASE MANAGEMENT SYSTEMS

Common to E.COMP.E, ETM, E.CONT.E, EIE, ECETime: 3 hours Max Marks: 80

Answer any FIVE QuestionsAll Questions carry equal marks

? ? ? ? ?

1. (a) How is check point done in ARIES [6]

(b) Can a second end check point record be encountered during analysis phase.[4]

(c) why is the use of CLRS important for the use of UNDO actions that are notthe physical inverse of the original update. [6]

2. (a) Explain about Disk Space management in detail.

(b) Explain about Memory hierarchy. [8+8]

3. (a) What is the difference between a candidate key and the primary key for agiven relation? What is a super key?

(b) Explain the statement that relational algebra operators can be composed.Why is the ability to compose operators important? [8+8]

4. (a) Explain about 4 Nf? Give one example.

(b) Explain about 5 Nf? Give one example. [8+8]

5. For the following relational database, give the expressions in SQL.Sailor schema (sailor id, sailorname, rating, Age)Reserves (sailor id, Boat id, day)Boat Schema(Boat id, boatname, color)

(a) Find the age of the youngest sailor who is eligible to vote(i.,e. 18 years) foreach rating level with at least two such sailors?

(b) Find the no of reservations for each red boat?

(c) Find the average age of the sailors who are eligible for voting for each ratinglevel that has at least two sailors?

(d) Find the names of sailors who have reserved boat name 103.

(e) Find the sailor id of sailors who have reserved a red boat.

(f) Find the colors of boats reserved by the sailor Lubber?

(g) Find the average age of sailors who has rating of 10?

(h) Find the names of sailors who have reserved both a red and a green boat?[16]

6. Explain about Fixed-Length file organization with an example. [16]

5

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Code No: R05410410 R05 Set No. 1

7. (a) Explain how concurrency execution of transactions improves overall systemperformance.

(b) What are the transaction isolation Levels in SQL? [8+8]

8. (a) Describe about the three levels of Data Abstraction.

(b) What is Data Independence? Explain the two levels of Data Independence.[8+8]

? ? ? ? ?

6

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Code No: R05410410 R05 Set No. 3

IV B.Tech I Semester Examinations,December 2011DATABASE MANAGEMENT SYSTEMS

Common to E.COMP.E, ETM, E.CONT.E, EIE, ECETime: 3 hours Max Marks: 80

Answer any FIVE QuestionsAll Questions carry equal marks

? ? ? ? ?

1. (a) What is the difference between a candidate key and the primary key for agiven relation? What is a super key?

(b) Explain the statement that relational algebra operators can be composed.Why is the ability to compose operators important? [8+8]

2. (a) Explain about Disk Space management in detail.

(b) Explain about Memory hierarchy. [8+8]

3. (a) Describe about the three levels of Data Abstraction.

(b) What is Data Independence? Explain the two levels of Data Independence.[8+8]

4. (a) Explain how concurrency execution of transactions improves overall systemperformance.

(b) What are the transaction isolation Levels in SQL? [8+8]

5. (a) Explain about 4 Nf? Give one example.

(b) Explain about 5 Nf? Give one example. [8+8]

6. Explain about Fixed-Length file organization with an example. [16]

7. For the following relational database, give the expressions in SQL.Sailor schema (sailor id, sailorname, rating, Age)Reserves (sailor id, Boat id, day)Boat Schema(Boat id, boatname, color)

(a) Find the age of the youngest sailor who is eligible to vote(i.,e. 18 years) foreach rating level with at least two such sailors?

(b) Find the no of reservations for each red boat?

(c) Find the average age of the sailors who are eligible for voting for each ratinglevel that has at least two sailors?

(d) Find the names of sailors who have reserved boat name 103.

(e) Find the sailor id of sailors who have reserved a red boat.

(f) Find the colors of boats reserved by the sailor Lubber?

(g) Find the average age of sailors who has rating of 10?

(h) Find the names of sailors who have reserved both a red and a green boat?[16]

7

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Code No: R05410410 R05 Set No. 3

8. (a) How is check point done in ARIES [6]

(b) Can a second end check point record be encountered during analysis phase.[4]

(c) why is the use of CLRS important for the use of UNDO actions that are notthe physical inverse of the original update. [6]

? ? ? ? ?

8

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