7 Jul 2021 Martyna Sławińska Primary Key vs. Unique Key: Explaining the Differences When designing a database, we often need to decide between defining a primary key vs. a unique key. Both of them are crucial during the design and further phases of a database. They allow us to uniquely identify each row, ensure the uniqueness of values in the column(s), and more. Let’s take a deep dive to learn more. This article will go through the primary and unique keys, their functions, and features. Read more 29 Apr 2021 Ignacio L. Bisso Why Do You Need a Primary Key in a Database Table? What is a primary key and why is it so important in SQL? Find out in this article. Primary keys are a central element in SQL databases. They provide a unique value that can identify a specific row in a table, which opens up a lot of other benefits. This article covers what a primary key is, how it works, and how to use it in an SQL database. Read more