BASEBALL SYSTEM

I would like a database program, that i can input names of baseball teams by dates and it will give me back? the number of times? for the last 4 days that team shows up..? I would like the information to stay in the database and not get deleted, so the next day i input the new information it calculates the current day i inputed plus the last? 3 days and i wouldn't have to into 4 days worth of team names again. i would like the output file to either be a text file or an excel file? that states the name and the amout of times that name shows up in the last 4 days.?