Virtual tables serve as the fundamental building blocks that allow a data virtualization server to present a unified view of data without physically moving it. These logical representations enable the system to query disparate sources transparently, maintaining data independence and flexibility. By defining these virtual structures, administrators can seamlessly integrate data from various origins into a single logical schema. This approach ensures that the underlying physical storage remains unchanged while providing users with a consistent and accessible data interface. Consequently, virtual tables are essential for achieving the core goal of real-time data integration and analysis.