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Consider the LIBRARY relational database schema shown in Figure, which is used to keep track of books, borrowers, and book loans. Referential integrity constraints are shown as directed arcs in the Figure. Write down relational expressions for the following queries:a. How many copies of the book titled "The Lost Tribe" are owned by the library branch whose name is 'Sharpstown'?b. How many copies of the book titled "The Lost Tribe" are owned by each library branch? (You should output the library

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