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Why Use PostgreSQL?

Why Use PostgreSQL?

PostgreSQL is a free and open-source database management system. It’s commonly referred to as an alternative to MySQL or MariaDB. Are you thinking about using PostgreSQL for your own project? Or are you researching databases to use for a project at work? Are you... Read more
A Guide to SQL NULL (and SQL NOT NULL)

A Guide to SQL NULL (and SQL NOT NULL)

The concept of NULL is something you should know about when working with databases. In this article, you’ll learn all about NULL: what it is, why it’s different, how you can check for it in different databases, and many examples. What Is NULL? A NULL is... Read more
19 Best Database Books

19 Best Database Books

If you work with databases, you’ll know that there’s a lot to learn. New technologies are being released, new versions of databases are coming out. There’s also a range of technical problems you need to work on and solve on your project or in your... Read more
Sample Database: Olympic Games (ERD and SQL)

Sample Database: Olympic Games (ERD and SQL)

When you’re learning SQL or database design, it’s helpful to use other databases as a reference. Many articles online refer to Oracle’s HR database, or SQL Server’s AdventureWorks database. These can be helpful, but often you’re looking... Read more