First Chapter Solved Exercise MCQs Of ICS Second Year Computer Science

First Chapter Solved Exercise MCQs Of ICS Second Year Computer Science. Each question includes the correct answer and a brief explanation. It’s designed to help you study, prepare for exams, and understand key concepts better. Boost your Computer Science knowledge with these practice exercises.

First chapter solved MCQs with explanation

1. Which of the following represents a collection of concepts that are used to describe the structure of a database?
a) data warehouse
b) data model
c) data structure
d) data type

Explanation: A data model defines the logical structure of a database, including entities, attributes, and relationships between them.

2. Which of the following data model is more flexible?
a) Network data model
b) Hierarchical data model
c) Relational data model
d) object data model

Explanation: The object data model is considered more flexible due to its ability to represent complex relationships and inheritance hierarchies.

3. Which of the following type of file require the largest processing time?
a) Sequential file
b) Random file
c) Indexed sequential-file
d) Direct access file

Explanation: Direct access files require the largest processing time because they can access any record directly without sequentially reading previous records.

4. Which of the following may be a temporary file?
a) Master file
b) Transaction file
c) Backup file
d) None of these

Explanation: Transaction files are often temporary, as they store data related to specific transactions that may not need to be retained permanently.

5. SQL is a(n):
a) Unstructured language
b) Structured language
c) Object oriented language
d) Software

Explanation: SQL is a Structured Query Language, which means it follows a specific syntax and rules for defining and manipulating data in a database.

6. What is the primary purpose of a database management system (DBMS)?
a) To create and manage spreadsheets
b) To store, retrieve, and manage data
c) To develop web applications
d) To perform statistical analysis

Explanation: A DBMS helps you organize and manage your data in a way that’s easy to find and use. It’s like a filing cabinet for your digital information.

7. Which type of database is most suitable for storing unstructured data like text, images, and audio?
a) Relational database
b) NoSQL database
c) Hierarchical database
d) Network database

Explanation: NoSQL databases are better for storing this kind of data. They’re more flexible and can handle different types of information easily.

8. In a relational database, what is a primary key?
a) A unique attribute that identifies a row in a table
b) A non-unique attribute that can be used to join tables
c) A foreign key that references a primary key in another table
d) A constraint that ensures data integrity

Explanation: It’s like a unique ID for each row in a table. It helps the database keep track of different records.

9. What is the purpose of normalization in database design?
a) To improve database performance
b) To reduce data redundancy and ensure data integrity
c) To create backup copies of the database
d) To implement security measures

Explanation: Normalization makes sure your data is organized in a way that prevents mistakes and makes it easier to find what you need.

10. Which of the following is a common type of database query language?
a) HTML
b) SQL
c) JavaScript
d) Python

Explanation: SQL is a language used to talk to databases. It helps you ask questions and get the information you want.