Item table structure: Item number: commonly used coded fixed-length character type, length 10, primary key. This project writes sQL statements that create the following three tables.
Create tables with SQL statements as needed: Course Selection Table: Table Name -SC Attribute: Sno character type, with up to 7 characters indicating student number.
Cno character type, with a maximum of 4 characters indicating the course number. Grade integer indicates grade. Constraint: main code -SnO, Cno;; Sno and Cno are external codes)