This project is a learning initiative on databases developed from scratch by the OceanBase team, based on the prototype of the Database course from Huazhong University of Science and Technology, in collaboration with multiple universities. The project features a simple structure and concise code, including written explanations and video tutorials, along with a range of problems that gradually increase in complexity. By combining theory with practical exercises, it helps beginners quickly grasp the functionality and relationships of kernel modules, enhances engineering coding skills, and contributes to standing out in interviews and at work.