Question
Video Centers of Europe, Ltd., is a chain of movie DVD rental stores. It must maintain data on the DVDs it has for rent, the
Video Centers of Europe, Ltd., is a chain of movie DVD rental stores. It must maintain data on the DVDs it has for rent, the movies recorded on the DVDs, its customers, and the actual rental. Each DVD for rent has a unique serial number. Movie titles and customer numbers are also unique identifiers. Assume that each movie has exactly one star. Note the difference in the year that the movie was originally filmed and the date that a DVDan actual diskwas manufactured. Some of the attributes and functional dependencies in this environment are as follows:
Attributes DVD Number Manufacture Date Movie Title Star Year Filmed Length [in minutes] Customer Number Customer Name Customer Address Rental Date Return Date Fee Paid
Functional Dependencies DVD Number ---> Movie Title DVD Number ---> Star DVD Number ---> Manufacture Date Movie Title ---> Star Movie Title ---> Length Movie Title ---> Year Filmed Customer Number ---> Customer Name Customer Number ---> Customer Address DVD Number, Customer Number, Rental Date ---> Return Date, Fee Paid
For each of the following tables, first write the tables current normal form (as 1NF, 2NF, or 3NF). Then, take those tables that are currently in 1NF or 2NF and reconstruct them as well structured 3 NF tables.
Primary key attributes are underlined. Do not assume any functional dependencies other than those shown.
a. Movie Title, Star, Length, Year Filmed b. DVD Number, Customer Number, Rental Date, Customer Name, Return Date, Fee Paid c. DVD Number, Manufacture Date, Movie Title, Star d. Movie Title, Customer Number, Star, Length, Customer Name, Customer Address e. DVD Number, Customer Number, Rental Date, Return Date, Fee Paid
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