I have a project with several activities, each activity has specific people who work in the activity and of course an ID for the activity.
Now every person has a unique ID, name, address, birth date, address ,,,, etc
a person can work in several activities ,, now what i want to know is should i put activities in a table , and persons in another table or what !!? how can i connect the two tables? How can assign a new activity for the persons?
let us say that all the activities need 100 workers, but there will be duplicate of the workers, how can i find the actual number of the workers without duplicate?? ( i need to find the numbers of all workers and the number of the actual workers)
Finally i want a restriction that if a person worked in five activities, i want an alarm or warning that this person has worked for four activities and he can't work any more, is that something i can do !??
thanks a lot for your time and concern