PROJ$\_$NUM: Project number

PRJ$\_$NAME: Project name

EMP$\_$NUM: Employee number

EMP$\_$NAME: Employee name

JOB$\_$CLASS: Job class

CHR$\_$HOUR: Charge hours $($hourly charge$)$

HOURS: Work hours

Note: The charge hour attribute $($CHR$\_$HOUR$)$ represents the employee$$s hourly charge and it can be decided by the employee$$s job class. Employees can work for different projects and each project$-$work hour is traced. A project needs many employees.