
What is the most widely deployed and used database out there?
Postgres? No
MySQL or Oracle? No
MongoDB? Hell, no!
The most widely used database is in your pocket, on your wristband, and in your browser!
Its name is SQLite, and it’s the king when it comes to the number of deployments. It’s shipped with Chrome, Safari, and Firefox browsers, which are used on millions of devices. What's more, this tiny relational database is pre-installed on billions of smartphones, TV sets, car multimedia systems, and edge devices.
For instance, all Apple devices, including the iPhone, Apple Watch, and the futuristic Apple Vision, come with SDKs that allow developers to use SQLite via the Core Data Framework.
Why is SQLite so widespread? It’s tiny - it can be as small as a few hundred kilobytes. It’s transactional. It supports essential SQL APIs, including triggers, indexes, views, window functions, and JSON.
The moral of the story - learn SQL, it's everywhere!

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