The system(adds-on) use orgnization's database that deals with. The system retrieves the supervisor's email and password. Should I put supervisors like entity in the ER diagram and their email and password? like this. ( itsn't from system DB ) Supervisor supervisor_email {PK} supervisor_password
The system(adds-on) use orgnization's database that deals with. The system retrieves the supervisor's email and password. Should I put supervisors like entity in the ER diagram and their email and password? like this. ( itsn't from system DB ) Supervisor supervisor_email {PK} supervisor_password
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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The system(adds-on) use orgnization's
The system retrieves the supervisor's email and password.
Should I put supervisors like entity in the ER diagram and their email and password? like this. ( itsn't from system DB )
Supervisor
supervisor_email {PK}
supervisor_password
Expert Solution
Step 1
Supervisor has two attributes supervisor_email and supervisor_password
The primary keys, if any represented in an ERD in the entity as follows:
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