Applying your knowledge in Enhanced Entity Relationship modeling, Develop an EER model for the following situation: A person may be employed by one or more organizations and each organization may be the employer of one or more persons. An organization can be internal organizational unit or an external organization. For persons and organizations, we want to know their ID, name, address and phone number. For persons we want to know their birthdate, and for organizations, we want to know their budget number. For each 6 employment, we want to know the employment date, termination date and bonus. Employment of a person by an organization may result in the person holding many positions over time. For each position, we know its title, and each time someone holds that position, we need to know the start date and termination date and salary. An organization is responsible for each position. It is possible for a person to be employed by one organization and hold a position for which another organization is responsible.

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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Applying your knowledge in Enhanced Entity Relationship modeling,

Develop an EER model for the following situation:

A person may be employed by one or more organizations and each

organization may be the employer of one or more persons. An organization

can be internal organizational unit or an external organization. For persons

and organizations, we want to know their ID, name, address and phone

number. For persons we want to know their birthdate, and for

organizations, we want to know their budget number. For each 6

employment, we want to know the employment date, termination date and

bonus.

Employment of a person by an organization may result in the person

holding many positions over time. For each position, we know its title, and

each time someone holds that position, we need to know the start date and

termination date and salary. An organization is responsible for each

position. It is possible for a person to be employed by one organization and

hold a position for which another organization is responsible.

 

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