Question 2: ( DATABASE APPLICATION DEVELOPMENT) Figure 2 shows an ERD produced by Encik Sulaiman to store course registration by students, course taught by lecturers, as well as students under academic advisors. matric name code title credit program status STUDENT COURSE register session group semester grade LECTURER advise staffld name roomNum Figure 2: University database ERD a) Using a different notation (eg. crow foot, UML), redraw the given ERD. b) Transform the ERD into relational model form. c) Encik Sulaiman realized that he can actually improve the database design by removing the relationship of the lecturer from the 'register'. In fact, he can create a new relationship 'teach' between the lecturer and course and assign appropriate attributes. Draw the new ERD. d) Transform the new ERD into relational model form. e) Compare the mapping outcome b) and d). Do you agree with Encik Sulaiman'sopinion? Give your arguments to support your opinion.

Question 2: ( DATABASE APPLICATION DEVELOPMENT) Figure 2 shows an ERD produced by Encik Sulaiman to store course registration by students, course taught by lecturers, as well as students under academic advisors. matric name code title credit program status STUDENT COURSE register session group semester grade LECTURER advise staffld name roomNum Figure 2: University database ERD a) Using a different notation (eg. crow foot, UML), redraw the given ERD. b) Transform the ERD into relational model form. c) Encik Sulaiman realized that he can actually improve the database design by removing the relationship of the lecturer from the 'register'. In fact, he can create a new relationship 'teach' between the lecturer and course and assign appropriate attributes. Draw the new ERD. d) Transform the new ERD into relational model form. e) Compare the mapping outcome b) and d). Do you agree with Encik Sulaiman'sopinion? Give your arguments to support your opinion.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.

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