申論 3假設某圖書館之關連資料庫中有七個關連資料表其資料綱要（data schema）如下，底線代表主要鍵，箭頭曲線代表外鍵。BOOK（BookId, Title, PublisherName）BOOK_AUTHORS（BookId, AuthorName）PUBLISHER（Name, Address, Phone）BOOK_COPIES（BookId, BranchId, No_Of_Copies）BOOK_LOANS（BookId, BranchId, CardNo, DateOut, DueDate）LIBRARY_BRANCH（BranchId, BranchName, Address）BORROWER（CardNo, Name, Address, Phone）BOOK BOOK_AUTHORSBookId Title PublisherName BookId AuthorNamePUBLISHERName AddressPhoneBOOK_COPIES BOOK_LOANSBookId BranchId No_Of_CopiesBookId BranchIdCardNoDateOut DueDateLIBRARY_BRANCH BORROWERBranchId BranchName AddressCardNoName Address Phone試寫出以下查詢之SQL：（每小題10 分，共20 分）㈠該圖書館的各分館各擁有多少本書且其書名為“Lord of the Rings＂？㈡那些借閱人現在在各分館借出“Lord of the Rings＂這本書？