Question: Oracle sql Task 2: Write a function that returns how old a book is Published before 2000 ->Book X by author Y is an old

Oracle sql

Task 2: Write a function that returns how old a book is Published before 2000 ->Book X by author Y is an old book Between 2000 and 2020 -> Book X by author Y is modern 2020 and later -> Book X by author Y is recently published X: book name Y: author name

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