Apply the systematic approach to build a skeletal ER model for the following situation. Discuss which steps were difficult to apply.
"A student can take many courses but can register in only one section of a course. Each course section is assigned a classroom where it meets throughout the semester. A faculty member teaches several courses each semester." -- Teams 1,2,3
"Members rent videos from XYZ video by handing to the sales clerk their membership card and the set of videos. The sales clerk scans the membership card and a membership screen opens-up indicating any past due charges. The sales clerk scans each video to generate a rental record for each video and the final sales receipt." -- Teams 4,5,6
"Members of XYZ video return borrowed videos by dropping the videos in a return bin. The returned videos are processed by a sales clerk. The processing involves (1) checking that the video tape is rewound, (2) entering any late return charge, and (3) updating the video inventory database." -- Teams 7,8,9
"Customers use the ATM machine to check account balances, shift money between customer accounts, withdraw up to 300 dollars per day, and deposit checks." -- Teams 10,11,12