Learn basic database concepts and techniques used to design and work with databases.

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To start, we will learn about the various database systems and structured query language (SQL) from scratch. Then, this module will introduce us to the different concepts and techniques that are used in designing a database management system, such as ER data models and relational data models. We will also learn about relational databases and familiarize ourselves with important ideas such as keys, constraints, and operations regarding relational databases. At the end of this module, we’ll learn about two other key concepts in database design, namely normalization and functional dependencies.

Database Design Fundamentals for Software Engineers

Be able to characterize the level of redundancy in a relational schema

Provide mechanisms for transforming schemas in order to remove redundancy

What is/are the goals of normalization?

Any dependency A → B in a relation, A should be a super key.

A relation must not contain any partial dependency

The domain of an attribute must include only atomic (simple, indivisible) values 

A relation must not contain any transitive dependency

In order to achieve the first normal form:

In order to achieve the first normal form:

Inorder to achieve the second normal form:

Inorder to achieve the second normal form:

Inorder to achieve the third normal form:

Inorder to achieve the third normal form:

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We have reached the end of this chapter, good job! By now we should be familiar with the concept of normal forms and how to normalize a non-normalized table.

In the next chapter, we will dive deep into the concept behind Structured Query Language (SQL).

This quiz will test your knowledge of normalization and the different normal forms.

Introduction

Fundamental Concepts

Data Modeling

Entity-Relationship Data Model

The Relational Data Model

Functional Dependenices

Normalization

Conclusion

Quiz!