1. Create a function that searches a book with a given ISBN and returns the value Old if it is…

1. Create a function that searches a book
with a given ISBN and returns the value Old if it is published before year 2000
and New if it is published in or after year 2000 .

2. Create a trigger for changing the value
of Page_count attribute to a default value 100 , if the value entered by the
user exceeds the upper limit of 1500 in case of insertion in relation BOOK

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