An entity-relationship model is one of the most challenging aspects of designing a database because you have to (1) understand the rules that govern how processes work and (2) be able to define and describe these rules in a picture. This section has provided you with the necessary tools to draw a basic ER model. Imagine the following scenario. You are designing a database for your local police department to keep track of traffic violations. The department has provided you with the following rules: • Each office can write multiple tickets. • Each ticket will list only one office. Each ticket will list only one driver. • Drivers can receive multiple tickets. STEP 3: Deliverable Using the tools described in this section, demonstrate that you understand the process of ER modeling by drawing and submitting an ER model for the scenario provided in Step 2.
An entity-relationship model is one of the most challenging aspects of designing a database because you have to (1) understand the rules that govern how processes work and (2) be able to define and describe these rules in a picture. This section has provided you with the necessary tools to draw a basic ER model. Imagine the following scenario. You are designing a database for your local police department to keep track of traffic violations. The department has provided you with the following rules: • Each office can write multiple tickets. • Each ticket will list only one office. Each ticket will list only one driver. • Drivers can receive multiple tickets. STEP 3: Deliverable Using the tools described in this section, demonstrate that you understand the process of ER modeling by drawing and submitting an ER model for the scenario provided in Step 2.
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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![Learning Objective PI3.2
Understand the process of entity-relationship modeling.
STEP 1: Background
It is very important that you understand the connections among entities, attributes, and relationships. This section has defined
each of these terms for you. Typically, entities are described by their attributes, and they are related to other entities. For example,
if "student name" is the entity, then age, gender, country of origin, marital status, and other demographic data are the attributes
(characteristics) of that particular student. That student is also related to other entities such as financial information, major, and
course information.
STEP 2: Activity
An entity-relationship model is one of the most challenging aspects of designing a database because you have to (1) understand
the rules that govern how processes work and (2) be able to define and describe these rules in a picture. This section has provided
you with the necessary tools to draw a basic ER model.
Imagine the following scenario. You are designing a database for your local police department to keep track of traffic violations.
The department has provided you with the following rules:
• Each office can write multiple tickets.
• Each ticket will list only one office.
• Each ticket will list only one driver.
• Drivers can receive multiple tickets.
STEP 3: Deliverable
Using the tools described in this section, demonstrate that you understand the process of ER modeling by drawing and submitting
an ER model for the scenario provided in Step 2.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1efeff8d-61a0-4018-bc37-9867bd4ec1f9%2Ffa05667d-1baa-4541-bd08-8b0539ced2ed%2Fcnpdytb_processed.png&w=3840&q=75)
Transcribed Image Text:Learning Objective PI3.2
Understand the process of entity-relationship modeling.
STEP 1: Background
It is very important that you understand the connections among entities, attributes, and relationships. This section has defined
each of these terms for you. Typically, entities are described by their attributes, and they are related to other entities. For example,
if "student name" is the entity, then age, gender, country of origin, marital status, and other demographic data are the attributes
(characteristics) of that particular student. That student is also related to other entities such as financial information, major, and
course information.
STEP 2: Activity
An entity-relationship model is one of the most challenging aspects of designing a database because you have to (1) understand
the rules that govern how processes work and (2) be able to define and describe these rules in a picture. This section has provided
you with the necessary tools to draw a basic ER model.
Imagine the following scenario. You are designing a database for your local police department to keep track of traffic violations.
The department has provided you with the following rules:
• Each office can write multiple tickets.
• Each ticket will list only one office.
• Each ticket will list only one driver.
• Drivers can receive multiple tickets.
STEP 3: Deliverable
Using the tools described in this section, demonstrate that you understand the process of ER modeling by drawing and submitting
an ER model for the scenario provided in Step 2.
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