System Databases by Fabrizio Fernández Soto

This document offers a comprehensive overview of database systems, tracing their development from early data management methods to modern solutions like NoSQL and NewSQL. It explains core concepts such as data warehouses, data marts, and metadata, emphasizing how these components support effective data analysis and integration. The report discusses various system architectures, including relational models that use keys to link data, and the role of data virtualization and metadata standards in ensuring interoperability across enterprise systems. It also highlights challenges such as data portability and error correction in databases. Understanding these systems is critical for managing large volumes of structured and unstructured data efficiently. As data needs grow, adopting flexible, scalable, and reliable database technologies becomes essential for supporting decision-making processes and digital transformation.