Intro to Relational Databases

Lesson 1: Data and Tables

In this lesson, you'll learn about how relational databases let you structure data into tables. You'll learn about the importance of unique keys and relationships between tables.

Lesson 2: Elephants Elements of SQL

In this lesson, you'll begin learning SQL, the Structured Query Language used by most relational databases. You'll learn about the **select** and **insert** statements, the basic operations for getting data out of a database and putting data into a database. You'll learn about the operators and syntax available to get the database to scan and join tables for you.

Lesson 3: Python DB-API

In this lesson, you'll learn how to access a relational database from Python code. You'll use a virtual machine (VM) running on your own computer to run a Python web application, and adapt that application to use a database backend. Then you'll learn about some of the most common security pitfalls of database-backed applications, including the famous Bobby Tables. This lesson also covers the SQL **update** and **delete** statements.

Lesson 4: Deeper Into SQL

In this lesson, you'll learn how to design and create new databases. You'll learn about normalized design, which makes it easier to write effective code using a database. You'll also learn how to use the SQL **join** operators to rapidly connect data from different tables.

Lesson 5: Final Project

In this project, you'll use your Python and SQL knowledge to build a database-backed Python module to run a game tournament. You'll design the database schema and write code to implement an API for the project.

• Karl Krueger - Karl is a Course Developer at Udacity. Before joining Udacity, Karl was a Site Reliability Engineer (SRE) at Google for eight years, building automation and monitoring to keep the world's busiest web services online. Outside of work, his interests include gardening, cooking, board games, and messing around with new programming languages. No whiteboard is safe from his doodles.