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Worksheet Chapter 6 - Memo
Course: Introduction to Databases and Databases Management Systems:Part 1 (CSIQ2634)
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University: University of the Free State
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UNIVERSITY OF THE FREE STATE
Department of Computer Science
and Informatics
CSIS2634
Worksheet (Chapter 6)
Question 1
Draw an extended ERD using the following specifications:
A shape has a colour and a name
A shape may have a number of vertices (no more than 12) that define the shape. A vertex
consists of an x-point and a y-point in 2D space. (x,y)
A triangle is a shape that has a triangle type (E for Equilateral, I for Isosceles and R for right-
angled).
A circle is a shape that has a circumference and a radius
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