employee (ID, person_name, street, city) works (ID, company_name, salary) соmpany (compапy-лате, сity) manages (ID, manager_id) Figure 4.12 Employee database.

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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Consider the employee database of Figure 4.12. Give an SQL DDL definition
of this database. Identify referential-integrity constraints that should hold, and
include them in the DDL definition.

employee (ID, person_name, street, city)
works (ID, company_name, salary)
соmpany (compапy-лате, сity)
manages (ID, manager_id)
Figure 4.12 Employee database.
Transcribed Image Text:employee (ID, person_name, street, city) works (ID, company_name, salary) соmpany (compапy-лате, сity) manages (ID, manager_id) Figure 4.12 Employee database.
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