Federated databases

A federated database is a system that connects multiple, independent databases, allowing them to work together as a unified whole. Imagine a library that contains many sections—each section is managed by different librarians, but they still collaborate to provide a seamless borrowing experience. In a federated database, each individual database retains its own management and structure, but users can access and query data across all of them without needing to know where the information is stored. This approach enhances data sharing and integration while maintaining the autonomy of each database.