Scheduled time Scheduled place Payment amount Payment Type Last pay date Total Date
5. Converting to third normal form: Invoice Invoice number(P.K) Learner ID Instructor ID Vehicle ID Date Payment amount Payment Type Last pay date Total Learner Learner ID(P.K) Lesson ID Learner name Learner address Learner contact number
6. Optimization:
Invoice-Lesson Invoice number(P.K) Lesson ID(P.K) Learner ID
Instructor Instructor ID(P.K) Instructor Name Instructor address
Lesson Lesson ID(P.K) Lesson Name Lesson charge Lesson duration
Vehicle Vehicle ID(P.K) Model number Chassis number Scheduled time Scheduled place