This case study explores the design and implementation of a database system for managing player attendance and training sessions. The system utilizes an Entity-Relationship Diagram (ERD) to model the relationships between players, attendance records, and training sessions. The ERD ensures that the database accurately reflects the business rules and constraints governing the system. The case study focuses on the relationships between the Player, Attendance, and Training Session tables, highlighting the use of an intermediary table (Attendance) to avoid a many-to-many relationship between players and training sessions. The business rules define the cardinality and optionality of the relationships, ensuring data integrity and consistency. This case study provides a practical example of database design principles and their application in real-world scenarios.
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