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Programming Concepts
Unit 1
Object-Oriented Programming (OOPs)
Introduction to OOPs
Classes and Objects
Inheritance and Polymorphism
Unit 2
Data Structure and Algorithms
Introduction to Data Structures
Arrays and Linked Lists
Sorting and Searching Algorithms
Unit 3
Operating System
Introduction to Operating System
Process Management in Operating System
Memory Management in Operating System
File Systems in Operating System
Unit 4
Database Management
Introduction to Databases
Database Design and Modeling
Query Optimization and Performance Tuning
Unit 4 • Chapter 2
Database Design and Modeling
Summary
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Concept Check
What is a primary key in a database?
Unique identifier for a record
Field that holds multiple values
Total number of records
Text field for descriptive data
Why is database normalization important?
Decreasing data integrity
Creating duplicate data
Increasing data redundancy
Reducing data redundancy and improving data integrity
What is a foreign key in a database?
Primary identifier of a record
Field with unique values
Links to primary key in another table
Numeric data type
What does ERD stand for in database design?
Entity-Relationship Diagram
Error-Reduction Data
Entity-Record Database
Entity-Reference Data
What is denormalization in database design?
Linking tables for data consistency
Normalizing data to reduce redundancy
Removing duplicate data
Intentionally adding redundancy for performance
Check Answer
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Introduction to Databases
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Query Optimization and Performance Tuning