Databáze a SQL pro začátečníky – Vystavěl Radek (2021)

Databases are ubiquitous in the computer world. You can find them in the information systems of businesses, government offices, schools, online stores, and in graphic, computational, or business systems. Knowledge of databases and the inseparably linked SQL language is thus part of the essential toolkit for IT professionals, but not only for them. While they are primarily used by programmers and system administrators, knowledge of them is often required even in economic positions in larger companies. But how do you start if you want to study them? Common books seem to be written for those who already understand the subject. They progress so quickly that the beginner reader soon gets lost in the explanations. And it was precisely the lack of introductory books on databases and SQL that motivated the creation of this book. Individual topics are explained here very clearly and, above all, in small steps, at a pace suitable for readers who are encountering the field for the first time. The book is organized in the form of a series of solved tasks to quickly draw you into action, allowing you to try everything yourself and think about the executed operations and commands. The tasks are selected to always push you a little further, and in most cases reflect problems solved in real practice simplified to their very core. The publication…