scenario. Identify entities, attributes of each entity, keys, Relationships and the minimum and maximum relationship cardinalities. Scenario: KPMG consultancy has a database to store information about their Auditors, Departments and Contractors details. Each AUDITOR is identified with AuId and other details are AuName, AuContact, Nationality and, Age(calculated from another attribute). Each DEPARTMENT has DeptNo as Identifier, DeptName and DeptType is also recorded. There are number of Contractors available in each Department to take care of external auditing services. Each CONTRACTOR has an ContrNo as key identifier, ContrName, Gender and

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
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Draw an E-R diagram for the below scenario. Identify entities, attributes of each entity, keys, Relationships and the minimum and maximum relationship cardinalities. Scenario: KPMG consultancy has a database to store information about their Auditors, Departments and Contractors details. Each AUDITOR is identified with AuId and other details are AuName, AuContact, Nationality and, Age(calculated from another attribute). Each DEPARTMENT has DeptNo as Identifier, DeptName and DeptType is also recorded. There are number of Contractors available in each Department to take care of external auditing services. Each CONTRACTOR has an ContrNo as key identifier, ContrName, Gender and Qualification, (Contractor can have more than one qualification) is also recorded. ● An Auditor is registered with one and only one Department and each department has one or more registered Auditors. ● Each Contractor, is assigned to one and only one Department and each Department has one or more assigned Contractors.
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