done by weijei.txt - create table book(bookcode varchar2(20...

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create table book (bookcode varchar2(20) PRIMARY KEY, isbn varchar2(15) , avaibility char(1), CONSTRAINT book_isbn_fk FOREIGN KEY(isbn)REFERENCES bookdetails(isbn)); create table staff (staffid char(4) PRIMARY KEY, staff_first_name varchar2(40), staff_last_name varchar2(20), staff_dob date, staff_position varchar2(3) CONSTRAINT staff_staff_position_cc CHECK((staff_position='CHL') OR (staff_position='DAL'), OR (staff_position='RFL') OR (staff_position='COS') OR (staff_position='LAT')), staff_address varchar2(80),
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