Is the Video Store in 2NF?
CUSTOMER (Cust_Num, Cust_Name, Cust_address, Cust_phone
VIDEO (VideoNum, VideoName, VideoType
RENTAL (RentalNum, Cust_Num, Rental_date, Return_Date, TotalPrice, Paid?)
RENTALDETAILS (RentalNum, VideoNum)
The only table that has a composite primary key has no other fields, therefore, yes.