SQLore: обучение SQL is a free app that helps you get to grips with SQL, the most popular programming language in the world. The app has an easy-to-understand interface, and even beginners will be able to learn how to use it in no time. This is because the tutorials are not only easy to understand but are also very comprehensive. Every topic is covered separately and in great detail. You will not need to be an expert in order to get the most out of the app. The best thing is that the interface is so simple that even people with no prior knowledge of programming languages will be able to use it.