How Can Quantum Computing and Databases Meet "in Practice"? From Algorithms to Systems

Quantum computing has recently moved from a theoretical concept to a transformative and increasingly accessible computational paradigm. These developments sparked growing interest in the database community along two complementary directions: applying quantum techniques to improve database tasks, and leveraging DBMS principles to support quantum workloads. This three-hour tutorial provides a bidirectional, practice-oriented treatment of this intersection, covering quantum foundations, optimization algorithms, a systematic survey of Quantum-for-DB and DB-for-Quantum research, and end-to-end system integration with a real DBMS. The tutorial includes hands-on demonstrations using quantum simulators and real quantum hardware. We summarize open challenges and research opportunities for practical real-world deployment.