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 third normal form. If it is not in 3NF, then convert it into 3NF.

**Customer table**

|  Cust_Id   |  Cust_Name   | DOB  | Area | City | State | Zip |
| --- | --- | --- | --- | --- | --- | --- |
|  1   |  Jack    |  1996-01-13   |  777 Brockton Avenue | Abington   |   MA | 2351 |
|  2   |  Bruce    |  1995-09-22   | 3018 East Ave|  Central Square |   NY   |  13036  |
|  3   |  Amy    |  1999-11-17   | 80 Town Line Rd|  Rocky Hill |   CT |   6067   |
|  4   |  James    |  1998-03-10   |  5710 Mcfarland Blvd  | Northport  | AL   | 35476 |
|  5   |  Veronica    |  1990-06-09   |  2900 Pepperrell Pkwy  | Opelika  | AL  | 36801  |



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

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We will discuss the solution in the next lesson.

# Problem statement

First, determine whether the following table is in third normal form. If it is not in 3NF, then convert it into 3NF.

**Customer table**

|  Cust_Id   |  Cust_Name   | DOB  | Area | City | State | Zip |
| --- | --- | --- | --- | --- | --- | --- |
|  1   |  Jack    |  1996-01-13   |  777 Brockton Avenue | Abington   |   MA | 2351 |
|  2   |  Bruce    |  1995-09-22   | 3018 East Ave|  Central Square |   NY   |  13036  |
|  3   |  Amy    |  1999-11-17   | 80 Town Line Rd|  Rocky Hill |   CT |   6067   |
|  4   |  James    |  1998-03-10   |  5710 Mcfarland Blvd  | Northport  | AL   | 35476 |
|  5   |  Veronica    |  1990-06-09   |  2900 Pepperrell Pkwy  | Opelika  | AL  | 36801  |



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

---

We will discuss the solution in the next lesson.

This exercise will test your knowledge of 3NF.

Introduction

Fundamental Concepts

Data Modeling

Entity-Relationship Data Model

The Relational Data Model

Functional Dependencies

Normalization

Structured Query Language

Conclusion

Exercise 2

Problem statement