Using the Structured Query Language of SQL. Methodical guidelines for computational work”, written by a team of authors, is an indispensable resource for students, graduate students and anyone who seeks to master the basics of working with databases . In the era of digitalization and the rapid growth of information, the ability to effectively manage data becomes not just an advantage, but a necessity. This book will help readers immerse themselves in the world of SQL, revealing to them all the subtleties and nuances of working with the language of structured queries. At the heart of the book is a practical approach to learning SQL. The authors offer readers not only theoretical knowledge, but also real examples that will help to consolidate the material and apply it in practice. Each chapter contains clear guidelines that guide the reader through the calculation process, making learning the SQL language more accessible and understandable. Readers will be able not only to get acquainted with the basics of SQL syntax, but also learn how to use it to solve specific tasks related to data processing and analysis. This book will be especially useful for technical students studying computer science, programming and databases. It is also suitable for those who work in the field of data analysis, business analytics and software development. If you want to upgrade your skills or take the first steps in a data-related career, this publication will be your trusted assistant. The book will be interesting for both beginners and those who already have experience with databases, but want to deepen their knowledge. The topics raised in the book cover a wide range of issues related to the use of SQL. Readers will learn about the principles of database design, how to generate queries to retrieve, update, and delete data. The authors pay attention to such important aspects as optimization of requests and work with transactions, which allows readers not only to learn how to write requests, but also to do it effectively. The book also touches on data security and access control issues, which is an important aspect in today's world, where information protection is becoming increasingly relevant. The style of the authors is distinguished by clarity and accessibility of the presentation, which makes complex concepts understandable even for those who are just beginning to get acquainted with SQL. The team of authors includes specialists in the field of information technology, which guarantees the high quality and relevance of the material presented . Their experience and knowledge make it possible to create a really useful guide that will become a reference book for many. If you're looking for a literature on SQL that combines theory and practice, "Using the Structured Query Language of SQL. Methodical instructions for calculation work" will be an excellent choice. This edition will not only help you master the SQL language, but also inspire you to further study and apply knowledge in real projects. Do not miss the opportunity to take a step towards a successful career in the field of data work, armed with this useful book