Gain insights into fundamental database concepts, relational databases, and entity-relationship diagrams. Learn about normalization techniques and basics of SQL to enhance database efficiency.

Databases are universal - they underlie the technology you use every day. They're a crucial component of everything from telecommunications systems, banking systems, and video games to just about any other software system that maintains some amount of persistent data.

In this course, you'll learn about the fundamental concepts of databases, why and when they're used, what relational databases are, and entity-relationship diagrams. You will also be exposed to techniques like normalization that help to increase the efficiency of databases. You'll wrap up with a look at the basics of Structured Query Language (SQL). 

After completing this course, you will be able to move onto more advanced courses involving database systems and SQL.

Database Design Fundamentals for Software Engineers

# Problem Statement

First, determine whether the following table is in second normal form. If it is not in 2NF, then convert it into 2NF.

**Customer-Order Table**

|  Cust_Id   |  Cust_Name   |  Order_Id   |  Order_Detail   |  Order_Category   |
| --- | --- | --- | --- | --- |
|  1    |  Jack    |  34   |  Shampoo   | Hygiene  |
|  2   |   Bruce  |  22   |   TV  | Electronics|
|  3   |   Amanda  | 84    |  Shirts   |  Clothing   |
|  4   |   James  |  12   |   Shoes  | Clothing |
|  2   |   Bruce  |  62   |   Glasses  | Clothing  |
|  5   |   Veronica  |  84   |   Shirts  |  Clothing  |



Take your time with this problem. Take a look at the [ second normal form lesson](https://www.educative.io/courses/database-design-fundamentals/second-normal-form) if you have trouble remembering the concept.

**Hint**: Start with identifying the primary key.

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We will discuss the solution in the next lesson.

This exercise will test your knowledge of 2NF.

Introduction

Fundamental Concepts

Data Modeling

Entity-Relationship Data Model

The Relational Data Model

Functional Dependencies

Normalization

Structured Query Language

Conclusion

Exercise 1

Problem Statement