I am trying to develop personnel-scheduling database for my Anesthesia practice. This can be looked at as a baseball team, where each player is assigned to a different position each day. There are more players on the team and positions, so some players will either be off or on vacation each day. I'd like to be able to go back and tabulate how many times in the year each player has played each position, as well as how many times each player has pitched on the weekend. I'm having trouble conceptualizing the setup and relations for this. I have a table for Players and a table for Positions. Could somebody please give me some guidance on how to proceed from here? Thanks!