The ability to access, understand, and manipulate data is extremely important in the current engineering job market. Employers are increasingly listing SQL as a “required skill” in job listings, whether the job is a back-end engineering job or not.
Data scientists, data analysts, researchers, and many others also need to be able to access information that’s stored in relational databases. No matter what your job title is, the ability to dive deep into an organized collection of data to answer questions, uncover patterns, and discover information is incredibly useful!
But unless you already work with a relational database, whether at a job or at school, how do you practice writing efficient and accurate queries?
Database World has over 80+ tasks spread out over 16 levels. The questions start out easy… But they ramp up in difficulty as you progress. This means you’ll never get bored as you practice!
Database World is a unique way of learning database skills that’s both educational and entertaining. While you write more and more queries, you’ll start to know what to look for and how to pinpoint the information you need. You’ll get faster and have less hesitation. In other words, writing amazing SQL queries will become second nature for you. You’re going to be able to leverage this into being highly competitive in the job market!
Back up – what’s the Arcade?
There are five different worlds in the CodeSignal Arcade. Each world has tons of levels and tasks to complete that help you master a particular concept.
- Start tackling tasks and get familiar with Arcade in the The Intro.
- Get up to speed on programming fundamentals in The Core.
- Python World focuses on helping you master programming in Python.
- Solve graph theory questions in Graphs World.
- And now, practice your SQL and database skills with Database World!
Are you ready to become a database guru? If so, get started on Database World with
projectList, the first task in the introductory level!