This collection presents software design tasks using the unified modeling language UML 2, design principles and patterns. The collection contains more than 120 tasks with several tasks in each in different sections of UML and software design. Basic concepts are given for each section, answers and explanations for the solution are given for tasks. The text of the book was translated from the original language using an artificial intelligence program. For the most part, the translation of the text is of very high quality, but in some cases, due to the imperfection of the technology, there may be incorrect phrase translations in the text, as well as single words and expressions may not be translated.