Computers Archives - Student Notes

Python Fundamentals: Core Concepts, OOP, and Practical Applications

Posted by admin on Nov 16, 2025 in Computers | 0 comments

Python Programming Fundamentals

History of Python

Python is a widely used, general-purpose, high-level programming language created by Guido van Rossum in 1989 in the Netherlands and developed by the Python Software Foundation.

The official date of birth is February 20, 1991.

Python is a dynamic, general-purpose, high-level, interpreted, freeware, and open-source programming language. Python supports both procedure-oriented programming and object-oriented programming.

Variables

A variable in Python is

Algorithm Analysis and Core Data Structures Explained

Posted by admin on Nov 14, 2025 in Computers | 0 comments

Fundamentals of Algorithms and Performance Analysis

An algorithm is a step-by-step set of instructions designed to perform a specific task or solve a problem efficiently. It acts as a blueprint for programming logic. Performance analysis of an algorithm focuses on determining its efficiency in terms of time and space. Time complexity measures how execution time grows with input size, while space complexity checks how much memory is required. These are often analyzed using asymptotic notations like

Core Database Concepts: ER Models, Normalization, and SQL

Posted by admin on Nov 13, 2025 in Computers | 0 comments

Entity Relationship Model (ERD)

Connectivities: Describes how entities are related (e.g., 1:1, 1:M, M:N).
- Example: A Student (1) can enroll in many Courses (M), so the relationship is 1:M.
Cardinalities: Indicates the number of instances of one entity related to another.
- Example: A Professor can teach up to 3 Courses (cardinality: 0..3).
Strong Relationship: A relationship between two independent, strong entities.
- Example: Student and Course are strong entities, each with its own primary key.
Weak Relationship:

Essential Java Programming Concepts: Syntax, Objects, and Arrays

Posted by admin on Nov 12, 2025 in Computers | 0 comments

Java Fundamentals and Core Concepts

Method Signature Syntax

A typical Java method is structured as follows:

accessModifier staticOrInstance returnType methodName(parameterType parameterName, ...) {
    // method body
}

API (Application Programming Interface)

An API is a collection of predefined classes, interfaces, and methods, often referred to as libraries.

Key Features of Java

Java is a versatile and powerful language known for the following characteristics:

Simple: It is designed to be easy to learn.

Python Fundamentals: Essential Code Examples and Concepts

Posted by admin on Nov 11, 2025 in Computers | 0 comments

Unit 2: Basic Python Operations and Control Flow

1. Check if a Number is Even or Odd

n = int(input("Enter a number: "))
print("Even" if n % 2 == 0 else "Odd")

2. Determine if a Number is Positive, Negative, or Zero

n = float(input("Enter a number: "))
if n > 0:
    print("Positive")
elif n < 0:
    print("Negative")
else:
    print("Zero")

3. Generate Fibonacci Series of Length ‘n’

n = int(input("Enter the length: "))
a, b = 0, 1
for _ in range(n):
    print(a, end=" ")
    a, b = b, a + b

4. Generate

Mastering Business Processes, Competitive Strategy, and Advanced Excel Data Analysis