ER - 1.Application Backgroup A database is to be developed...

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1.Application Backgroup A database is to be developed that keeps track of people who enroll in ski lessons and the results they obtain in those courses. Here is what is known: Ski students have a name (firstname, lastname, initials), a ranking (e.g. beginner, intermediate, advanced), a home address (e.g. 45 Elgin St., Ottawa Ont), a postal code (e.g. K1X X2Z), an email address, a phone number, a date of birth. Email addresses are not necessarily unique (two people could share the same address). The ski school offers 6 levels of courses (beginner, intermediate, advanced, expert, ski-patrol, instructor). Instructor level courses are taken by people who wish to become ski instructors. Ski-patrol courses are taken by people who wish to become ski-patrols (the courses teach much about first-aid). Instructores have a ranking as well which means they are allowed to teach beginner, intermediate, advanced etc., depending on their rankings. There are several offerings of each level of course during the winter. Each course offering has a start date, and end date, a regular meeting time (e.g. tuesday
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