Draw create a ER diagram with your own idea and concept without copying it from internet about any organization or anything sample er diagram for idea is attached below
Draw create a ER diagram with your own idea and concept without copying it from internet about any organization or anything sample er diagram for idea is attached below
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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Q. Draw create a ER diagram with your own idea and concept without copying it from internet about any organization or anything sample er diagram for idea is attached below

Transcribed Image Text:Alternative Notations for ER Diagrams
• There are many alternative diagrammatic notations for displaying ER
diagrams.
• we introduce the Unified Modeling Language (UML) notation for class
diagrams, which has been proposed as a standard for conceptual object
modeling.
Fname
Figure 7.18
ER diagrams for the company schema, with structural con-
straints specified using (min, max) notation and role names.
Minit
Lname
Address
Salary
Bdate
Name
San
Sex
Locations
WORKS FOR
(4N)
Department
Start dateNumber of_employees
(1.1)
Employee
Name
Number
EMPLOYEE
DEPARTMENT
Department
Managed
(O,N) Contralling
Department
ager
T1,1)
MANAGES
CONTROLS
(1N)
Hours
Worker
(0,1)
Supervisoe
Controlled
(1.1) Project
PROJECT
(0,N)
Supervisor
WORKS ON
Project
(1N)
SUPERVISION
(O,N)
Employee
Name
Location
Number
DEPENDENTS OF
(1,1) Dependent
DEPENDENT
Name
Birth_date
Relationahip
Sex
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