From there, the program fills the rest of the data displayed.
If the clerk is adding a new item (customer, tape, product), they simply enter the new ID or name and other appropriate data and when no match is made, they tell the program to add the item.
Customer ID Tape ID Customer Name & Level Tape Name Customer Birthday Old/New Release & Release Date Account Owner ID Famous Actor(s) Account Owner Name Rating Credit Card Number Rented Before? Driver's License Number Birthday Rental? Start Date Nth-Free Rental? Customer Address Tape Category Customer Phone Number Purchase Date Rental Cost Late Fees Total Cost
The clerk can query information on:
Quick commands exist to get back to the previous level or directly to where you started "snooping around" from. (For example, you see that John Smith rented 2001: A Space Odyssey so you see who else rented it; Jane Johnson did, and also rented The Pink Panther and end up seeing that George Ledin is currently renting it. You can either go back to Jane and then back to John, or simply go directly back to John.)