Construct appropriate tables for each of the E-R diagrams in Exercises 2.2 to 2.4.
Answer to relevant QuestionsDesign an E-R diagramfor keeping track of the exploits of your favourite sports team. You should store thematches played, the scores in eachmatch, the players in each match and individual player statistics for each match. ...Consider an E-R diagram in which the same entity set appears several times. Why is allowing this redundancy a bad practice that one should avoidwhenever possible?Design a generalization–specialization hierarchy for a motor-vehicle sales company. The company sells motorcycles, passenger cars, vans, and buses. Justify your placement of attributes at each level of the hierarchy. ...Design a relational database for a university registrar’s office. The office maintains data about each class, including the instructor, the number of students enrolled, and the time and place of the class meetings. For ...Consider the relational database of Figure. Give a relational-algebra expression for each of the following queries:a. Find the company with the most employees.b. Find the company with the smallest payroll.c. Find those ...
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