2. Consider the ER diagram on the next slide. (i) What is the key of entity...
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2. Consider the ER diagram on the next slide. (i) What is the key of entity set A (ii) What is the key of entity set B (iii) What is the key of entity set C Be sure to explain how you got your answers. (No credit without valid explanations.) c1 c2 C c3 a1 A c4 1 a2 R2 N b3 b1 N b2 b4 B R1 1 b6 b5 b7 2. Consider the ER diagram on the next slide. (i) What is the key of entity set A (ii) What is the key of entity set B (iii) What is the key of entity set C Be sure to explain how you got your answers. (No credit without valid explanations.) c1 c2 C c3 a1 A c4 1 a2 R2 N b3 b1 N b2 b4 B R1 1 b6 b5 b7
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An attribute is said to be key in a table represented in ER d... View the full answer
Related Book For
Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
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