No, even if you count that as a database, it isn't the most deployed. Look at the list in the article. SQLite is on every Android device and Windows 10 device

No, even if you count that as a database, it isn't the most deployed. Look at the list in the article. SQLite is on every Android device and Windows 10 device, and many/most personal computers with other operating systems (including earlier Windows versions). There are more Android devices in use than Windows ones: https://www.computerworld.com/article/2919104/windows-pcs/where-will-microsoft-find-1-billion-devices-for-windows-10.html https://www.computerworld.com/article/2919104/windows-pcs/wh...