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The questions in it make use of three different database schemas, OrdersDB (a simplified version of the classicmodels database), StudentDB (a database tracking students, the modules they are enrolled in and their lecturers) and RentalDB (a simplified version of the sakila database introduced in the first assignment. The schmea for all three databases is attached at the end of this assignment. Primary keys are underlined, while foreign keys are italicised. Each schema also includes a list of foreign to primary key relations, as the corresponding keys are not always named the same in different tables (in the RentalDB schema, for example, the primary key staff_id in the staff table is a foreign key in the store table but is named manager_id instead).
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