Description: Federated query is an approach that allows retrieving data from multiple sources in a unified manner, facilitating access and analysis of information dispersed across different systems. This type of query is particularly relevant in environments where data may reside both in the cloud and on local infrastructures. Federated queries enable users to execute SQL queries that integrate data from various databases, regardless of their physical location. This is achieved by creating a framework that allows communication between different database management systems, resulting in a smoother and more efficient querying experience. The main features of federated queries include the ability to combine real-time data, reducing the need to move large volumes of data, and the ability to maintain security and control over sensitive data. In the context of cloud computing, federated queries allow users to run queries on data stored in the cloud and in other sources, such as external SQL databases, without the need to import that data into the querying system. This not only optimizes resource usage but also provides greater flexibility for data analysis in complex and varied environments.
