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by Visio 2013 Draw the ERD with cardinalities and keys based on the following description. A class is identified by class number, and a student
by Visio 2013
Draw the ERD with cardinalities and keys based on the following description. A class is identified by class number, and a student is identified by student ID. A class contains at least one student and may have many students. A student can only have 1 class and may exist in the system without a class.
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