D Student Regd. No. Course Code: DCAP 204 Course Title: Managing Database Date of Exam:- 18 Sept Session:- 9:30-12:30 Time Allowed : 3 hours Max. Marks: 80 1. This paper contains 10 questions divided in two parts on 1 page. 2. Part A is compulsory. 3. In Part B (Questions 2 to 10), attempt any 6 questions out of 9. Attempt all parts of the questions chosen. 4. The marks assigned to each question are shown at the end of each question in square brackets. 5. Answer all questions in serial order. Part –A Q1: Attempt all the questions a) b) c) d) e) f) g) h) i) j) What do you mean by database? Define Transaction? Define weak entity set. Define a view? What do you mean by relational database? What are the three levels of data abstraction? What is data independence? Define data model. What is an entity? Define Rollback. [2] [2] [2] [2] [2] [2] [2] [2] [2] [2] Part-B Q2: Discuss about Lock Based Protocols. [10] Q3: Discuss about UNION and INTERSECT operations. Give suitable example. [10] Q4: Discuss about GRANT and REVOKE in detail. Give suitable example. [10] Q5: Write a note on Entity Relationship model and give suitable example. [10] Q6: Explain the storage structure and give suitable example. [10] Q7: Discuss about DML operations and how DML statements are different from DDL operation? [10] Q8: What is concurrency? Discuss about Timestamp based protocols. [10] Q9: Write a note on Tuple relational calculus. [10] Q10: Discuss about Database Architecture. [10]