The book is about the research of the sentiment analysis of the design of a natural language user interface to the database. In particular, the existing types of user interfaces to databases, as well as their advantages, features, and implementation problems are considered. Provided an overview of research in natural language processing and developing user interfaces to databases. As a result of the comparative analysis of existing implementations of natural language user interfaces to databases, the expediency of automating the possibility of forming and expanding the subject area, as well as providing the ability to form queries in other formal query languages, was substantiated. Also book described a method for constructing a natural language user interface to databases, which is distinguished by the use of templates of sentence models and provides automatic data extraction without the need for the user to create an SQL query.