KRISHNA KANTA HANDIQUI STATE OPEN UNIVERSITY Hiranya Kumar Bhuyan School of Science and Technology

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1 HOME ASSIGNMENT FOR BACHELOR OF COMPUTER APPLICATIONS (BCA) THIRD SEMESTER, 2014 N.B. The learners will have to collect receipt after submitting the assignment with the signature and seal of the collector of study centre and will have to keep with him/her till the declaration of result. Receipt Received the assignment from Mr/Ms.Enrollment number of 3 rd Semester, 2014 BCA on Date: Signature of collector with seal

2 Object-Oriented Programming Through C++ [BCA(S3)08] A. Answer the following questions (2 X 4= 8) Q1. What do you mean by data abstraction? Q2. How data hiding can be achieved in C++? Q3. What are the benefits of function overloading? Q4. What is multilevel inheritance? Give an example. B. Answer the following questions (3 X 4= 12) Q1. Can base class, access members of a derived class? Give reasons. Q2. What is the difference between run-time error and syntax error? Give one examples of each. C. Answer the following questions : (5 X 2=10) Q1. Define a class 'Complex_no' which has two data members, one for representing the real part and the other for complex part. Define a constructor to initialize the object. Q2. Explain default argument and inline function with suitable examples. D. Answer the following questions (10 X 2=20) Q1. Write a complete C++ program to perform 2D matrix operations as follows: (i) (ii) Define a class MATRIX, use appropriate constructor(s). Define methods for the following two matrix operations addition and transpose. Q2. What are virtual classes? Explain the need for virtual classes while building class hierarchy.

3 Database Management System [BCA(S3)09] A. Answer the following questions: (2 X 4= 8) Q1. Compare file-oriented system and database system. Q2. What do you mean by logical data independence and physical data independence? Q3. Differentiate prime attribute and non-prime attribute with example. Q4. Define the integrity rules? B. Answer the following questions : (3 X 4= 12) Q1. Explain the purpose of GROUP by, HAVING and ORDER BY clause giving suitable examples. Q2. Show that, if a relational database is in BCNF, then it is also in 3NF. Q3. Describe the three levels of data abstraction? C. Answer the following questions : (5 X 2=10) Q1. Draw E-R diagram for an operator who can work on many machines and each machine has many operators. Each machine belongs to one department but a department can have many machines. Q2. Consider the relational table given below and write SQL queries for the following: Employee(SSN_No, Name, Department, Salary) (i) List all the employees whose name starts with the letter 'L'.

4 (ii) Find the maximum salary given to employees in each department. (iii) Find the second maximum salary from the table. (iv) Find the employee who is getting the minimum salary. D. Answer the following questions: (10 X 2=20) Q1. What are the importances of functional dependences in database design? Discuss partial dependency, full functional dependency and transitive dependencies. Q2. What is the purpose of normalizing data? Explain first, second and third normal form with appropriate examples.

5 Operating System [BCA(S3)10] A. Answer the following questions (2 X 4= 8) Q1. What is demand paging? Q2. Differentiate preemptive from non-preemptive scheduling. Q3. What do you meant by a system call? Q4. Differentiate absolute path from relative path. B. Answer the following questions (3 X 4= 12) Q1. Define the terms: Throughput, Turnaround time and Response time. Q2. Define process. How a process can be terminated? C. Answer the following questions (5 X 2=10) Q1. What is semaphore? What are the requirements to achieve mutual exclusion? Q2. What are the conditions that must be present for deadlock to occur? Explain in brief. D. Answer the following questions (10 X 2=20) Q1. Write in detail about threading issues. Q2. Briefly discuss FCFS Scheduling and Round Robin Scheduling.

KRISHNA KANTA HANDIQUI STATE OPEN UNIVERSITY Hiranya Kumar Bhuyan School of Science and Technology

KRISHNA KANTA HANDIQUI STATE OPEN UNIVERSITY Hiranya Kumar Bhuyan School of Science and Technology HOME ASSIGNMENT FOR BACHELOR OF COMPUTER APPLICATIONS (BCA) THIRD SEMESTER, 2017 N.B. The learners will have to collect receipt after submitting the assignment with the signature and seal of the collector

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