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This learning module explores the fundamental concepts and operations of relational algebra, the theoretical foundation of relational databases. It introduces basic relational algebra concepts such as 'relation', 'tuple', and 'operation', and then dives into fundamental relational algebra operations, including selection, projection, and union. Students will also learn about more advanced operations like joins and division, expanding their understanding of how complex data relationships can be managed. Further, the module will cover composite and aggregation operations to handle more intricate data manipulations, as well as operations for modifying relations. This module gives students a firm theoretical foundation to work with relational databases.