CMT 321 - SEM 251 by Ts. Dr. Zainab Ajab Mohideen

DATABASE AND DBMS

zainab96 — 2025-10-01 11:23:24 UTC

Transaction Management

zainab96 — 2025-10-01 11:23:24 UTC

• Definition of Transaction
• Properties of Transactions
• Database Architecture

Task 1

zainab96 — 2025-10-01 11:23:24 UTC

Example: Banking system

Q n A: Program – data independence refers to (?)

Q n A: Program – data independence is called (?)

Task 2

zainab96 — 2025-10-01 11:23:24 UTC

Q n A: Which diagram model used (?)

Task 3

zainab96 — 2025-10-01 11:23:24 UTC

List the process at (?)

Task 4

zainab96 — 2025-10-01 11:23:24 UTC

The type of interaction (?)

Concurrency Control

zainab96 — 2025-10-01 11:23:24 UTC

• Problems of Concurrency Control
• Serializability
• Recoverability

Activity 1

zainab96 — 2025-10-01 11:23:24 UTC

Discuss in Groups and Group Leader Update the discussion

Concurrency Control

zainab96 — 2025-10-01 11:23:24 UTC

• Timestamping Methods
• Optimistic Techniques
• Granularity of Data Items
• Locking Methods

Database Recovery Requirements Engineering

zainab96 — 2025-10-01 11:23:24 UTC

• Concepts
• Transactions and Recovery
• Recovery Facilities
• Backup Mechanism
• Log File
• Checkpointing
• Recovery Techniques
• Shadow Paging
• ARIES Recovery Algorithm

Database Security

zainab96 — 2025-10-01 11:23:24 UTC

• Threats
• Authorization
• Discretionary Access
• Mandatory Access Control

Database Security

zainab96 — 2025-10-01 11:23:24 UTC

• Multilevel Relations and Polyinstantiation
• Views
• Backup and Recovery

Database Security

zainab96 — 2025-10-01 11:23:24 UTC

• Encryption
• RAID (Redundant Array of Independent
Disks)
• DBMSs and Web Security

Assignment 1

zainab96 — 2025-10-01 11:23:24 UTC

You can discuss assignmnet 1 here

Tutorial 1 -CHAP 1

zainab96 — 2025-10-01 11:23:24 UTC

Answer

1-d 6-c 11-b

2-b 7-b 12-d

3-a 8-d 13-c

4-b 9-b 14-b

5-b 10-b 15-b

Tutorial 2-CHAP 2

zainab96 — 2025-10-01 11:23:24 UTC

Answer

1-d 6-c 11-d

2-b 7-b 12-b

3-a 8-b 13-b

4-b 9-b 14-b

5-b 10-c 15-b

Assignment 1 Due Date

zainab96 — 2025-10-01 11:23:24 UTC

Latest by 10.00 am submit your assignment (pdf) uploaded by Group Leaders ONLY.

Task 4

zainab96 — 2025-10-01 11:23:24 UTC

QnA: Transaction consists of 2 database operations:?
QnA: A non-database operation:?

Activity 2

zainab96 — 2025-10-01 11:23:24 UTC

Explain in your own words the state of Transactions.

Activity 3

zainab96 — 2025-10-01 11:23:24 UTC

Concurrency Control:
• Problems of Concurrency Control

Activity 4

zainab96 — 2025-10-01 11:23:24 UTC

Concurrency Control :
• Serializability

Activity 5

zainab96 — 2025-10-01 11:23:24 UTC

Concurrency Control:
• Recoverability

Activity 1

zainab96 — 2025-10-01 11:23:24 UTC

Concurrency Control:
• Locking Methods

TEST 1

zainab96 — 2025-10-01 11:23:24 UTC

ALL THE BEST !

Activity 2

zainab96 — 2025-10-01 11:23:24 UTC

2 Phase Locking Method

Activity 3

zainab96 — 2025-10-01 11:23:24 UTC

2 PL : write ur answer for the above 2PL

Activity 4

zainab96 — 2025-10-01 11:23:24 UTC

Deadlock

Activity 5

zainab96 — 2025-10-01 11:23:24 UTC

Deadlock

Write your answer for the above Deadlock.

Test 1

zainab96 — 2025-10-01 11:23:24 UTC

Test 1 is on this week.

DATE: 27 NOVEMBER 2023 (MONDAY)

TIME: 4-5 PM

VENUE: DUP C

zainab96 — 2025-10-01 11:23:24 UTC

Assignmnet 1 Discussion

Activity 1

zainab96 — 2025-10-01 11:23:24 UTC

What is your suggestion?

STUDENTS DISCUSSIONS ON ASSIGNMENT 1

zainab96 — 2025-10-01 11:23:24 UTC

23 GROUPS

zainab96 — 2025-10-01 11:23:24 UTC

LIST OF GROUPS AND GROUP MEMBERS.

27 OCTOBER 2025 (82/84) STUDENTS

All the Best !

SEM BREAK

zainab96 — 2025-10-01 12:11:29 UTC

Tutorial 3 - Tutorial 6

zainab96 — 2025-11-10 02:14:17 UTC

Answer : Tutorial 3

1-b 6-b

2-d 7-d

3-b 8-b

4-a 9-b

5-c 10-c

Answer : Tutorial 4

1-b 6-b

2-d 7-c

3-a 8-b

4-b 9-a

5-c 10-c

Answer : Tutorial 5

1-c 6-b

2-c 7-b

3-b 8-b

4-d 9-b

5-b 10-c

Answer : Tutorial 6

1-b 6-b

2-d 7-d

3-b 8-a

4-b 9-b

5-b 10-a