Provide a normalized relational logical schema for the same database (NB It is not mandatory to report the restructured ER diagram) Define referential integrity constraints for 2 relationships of your choice among those defined in the conceptual schema Normalized logical relational schema EMPLOYEE( CodE, NameE, Qualification*, Type) SEASIDE_RESORT(CodS, NameS, WebPage*) TIME (SDate) WORK_AT (CodE, CodS, SDate, EndDate, JobRole) BEACH_SEAT(CodS, CodBS, sea_distance, CodPR) PRICE_RANGE(CodPR, Amount) Referential integrities 1) RELATIONSHIP IN BEACH_SEAT(CodS) REFERENCES SEASIDE_RESORT(CodS) 2) RELAZIONE WORK_AT WORK_AT(CodE) REFERENCES EMPLOYEE(CodE) WORK_AT(CodS) REFERENCES SEASIDE_RESORT(CodS) WORK_AT(SDate) REFERENCES TIME(SDate)
Provide a normalized relational logical schema for the same database (NB It is not mandatory to report the restructured ER diagram) Define referential integrity constraints for 2 relationships of your choice among those defined in the conceptual schema Normalized logical relational schema EMPLOYEE( CodE, NameE, Qualification*, Type) SEASIDE_RESORT(CodS, NameS, WebPage*) TIME (SDate) WORK_AT (CodE, CodS, SDate, EndDate, JobRole) BEACH_SEAT(CodS, CodBS, sea_distance, CodPR) PRICE_RANGE(CodPR, Amount) Referential integrities 1) RELATIONSHIP IN BEACH_SEAT(CodS) REFERENCES SEASIDE_RESORT(CodS) 2) RELAZIONE WORK_AT WORK_AT(CodE) REFERENCES EMPLOYEE(CodE) WORK_AT(CodS) REFERENCES SEASIDE_RESORT(CodS) WORK_AT(SDate) REFERENCES TIME(SDate)
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
Related questions
Question
- Provide a normalized relational logical schema for the same
database (NB It is not mandatory to report the restructured ER diagram) - Define referential integrity constraints for 2 relationships of your choice among those defined in the conceptual schema
Normalized logical relational schema
EMPLOYEE( CodE, NameE, Qualification*, Type)
SEASIDE_RESORT(CodS, NameS, WebPage*)
TIME (SDate)
WORK_AT (CodE, CodS, SDate, EndDate, JobRole)
BEACH_SEAT(CodS, CodBS, sea_distance, CodPR)
PRICE_RANGE(CodPR, Amount)Referential integrities
1) RELATIONSHIP IN
BEACH_SEAT(CodS) REFERENCES SEASIDE_RESORT(CodS)2) RELAZIONE WORK_AT
WORK_AT(CodE) REFERENCES EMPLOYEE(CodE)
WORK_AT(CodS) REFERENCES SEASIDE_RESORT(CodS)
WORK_AT(SDate) REFERENCES TIME(SDate)
![CodeS
NameSO-
WebPage(0,1)
SDate
TIME
Qualification.
SEASIDE
RESORT
(1,N) EndDate
(1,N)
>WORK_AT
(0,N) JobRole
LIFEGUARD
(p.e)
EMPLOYEE
(0,N) (1,1)
IN
CodeE
-O NameE
CodeBS
BEACH
SEAT
(1,1)
HAS_PRICE
(0,N)
-O sea_distance
PRICE
RANGE
CodePR
-O Amount](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F42eb23f5-591e-411f-9b72-0865a0b1ec70%2F1316a6be-ac2e-426f-b931-f2184badaf1e%2F5gcbyit_processed.png&w=3840&q=75)
Transcribed Image Text:CodeS
NameSO-
WebPage(0,1)
SDate
TIME
Qualification.
SEASIDE
RESORT
(1,N) EndDate
(1,N)
>WORK_AT
(0,N) JobRole
LIFEGUARD
(p.e)
EMPLOYEE
(0,N) (1,1)
IN
CodeE
-O NameE
CodeBS
BEACH
SEAT
(1,1)
HAS_PRICE
(0,N)
-O sea_distance
PRICE
RANGE
CodePR
-O Amount
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