Pro Oracle SQL Development: Best Practices for Writing Advanced Queries

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

J. HellerPro Oracle SQL Developmenthttps://doi.org/10.1007/978-1-4842-8867-2_1

1. Understand Relational Databases

Jon Heller¹  

(1)

Clive, IA, USA

 

Understanding the history and theory behind relational databases helps us achieve a deeper understanding of Oracle SQL. This information helps us avoid repeating old mistakes, and it gives us the confidence needed to occasionally ignore the theory and build practical solutions. This book assumes you are already familiar with relational databases and SQL, so the information provided here is not merely introductory; it is foundational.

History of Relational Databases

A brief history of relational databases helps us appreciate ...