Modify the initial ER diagram presented in Figure B.19 to include the following entity supertype and subtypes:
Question:
Modify the initial ER diagram presented in Figure B.19 to include the following entity supertype and subtypes: The University Computer Lab USER may be a student or a faculty member.
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The new ER diagram segment will contain the supertype USER and the subtypes FACULTY and STUDENT How the use of this supertypesubtype relationships affect the entities shown here is illustrated in the ...View the full answer
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Related Book For
Database Systems Design Implementation and Management
ISBN: 978-1337627900
13th edition
Authors: Carlos Coronel, Steven Morris
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