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The 4-tuples in a 4-ary relation represent these attributes of published books: title, ISBN, publication date, number of pages.
a) What is a likely primary key for this relation?
b) Under what conditions would (title, publication date) be a composite key?
c) Under what conditions would (title, number of pages) be a composite key
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Juiceco manufactures two products: premium orangejuice and regular orange juice. Both products are made bycombining two types of oranges: grade 6 and grade 3. Theoranges in premium juice must have an average grade of atleast 5, those in regular juice..
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