Gain insights into relational databases and SQL. Learn about creating, managing, and editing tables using MySQL. Explore complex queries, indexes, and join functions for efficient data handling.

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Relational databases store data in a row-based table structure. Structured Query Language (SQL) is a core language used to retrieve data from the relational database. One of its most widely used extensions, MySQL, also gives you the power to edit, create, and manage the queried data.

In this course, you’ll be introduced to the basics of relational database management with SQL. You’ll use MySQL to create a table, edit the data, and even change the structure. You’ll also create indexes to quickly access data for faster performance on common queries. Additionally, you’ll explore more complex queries to extract useful data with aggregate functions, grouping, ordering, and creating limits and filters in output tables. Finally, you’ll learn how to combine data from different tables with join functions.

By the end of this course, you’ll be able to create, manage, edit, and merge relational databases with confidence. MySQL will prepare you for data projects large and small.

Getting Started with SQL and Relational Databases

# What we'll learn

In the [previous chapters](https://www.educative.io/courses/getting-started-sql-relational-databases/create-tables), we started implementing our basic customer relationship management system. We already implemented the `customers_db` database and the `customers` table. In this chapter, we’re going to implement the `products` table.

Below are some features of the `products` table:
* It will have a `primary key id`. This will be an integer, not null, and auto-incremented.
* It will have a `name`, which is going to be a string, not null, and unique.
It will have a `price`, which is going to be a decimal number and not null.
Let’s check how many tables are currently in our database by executing the query given below:


Learn to create a new table in our existing database.


Create Table Products

Learn to create a new table in our existing database.

Getting Started

Manage MySQL Server

Basic SQL Commands

Add Columns and Indexes

Count and Sort Records

Foreign Keys

Joins, Left Joins And Subqueries

Conclusion

Create Table Products

What we’ll learn