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@article{DATABASE MODELS AND ESSENCE-COMMUNICATION MODEL_2026, volume={49}, url={https://americanjournal.org/index.php/ajtas/article/view/3629}, abstractNote={ This article provides a comprehensive analysis of the main database models — hierarchical, networked, relational, object — oriented, and NoSQL models. Also, the concept of the essence-communication (MA) model, its main components, practical methods of constructing a diagram and the rules for transferring to a relational scheme are covered in detail. The article is intended for students, programmers and database engineers. }, journal={American Journal of Technology and Applied Sciences}, year={2026}, month={Jun.}, pages={1–6} }