Analysis of relational schemas and normalization Consider the following conceptual schema of a sample database domain that contains information about customers' booking of KTV studio. book has CUSTOMER custPhone name preferences [0..*] KTVSTUDIO studioName location equipmentList[0..*] RATE ID startDateTime rateType unitPrice ID ID BOOKING duration specialRequest[0..*] A database designer applied a process of logical design, and he/she transformed the conceptual schema into the following collection of relational schemas. CUSTOMER(custPhone,name,preferences) KTVSTUDIO(studioName, location, equipment List,rateType) BOOKING(custPhone, studioName, statDateTime,duration,specialRequest) RATE(rateType,untPrice) (i) Find all functional and multivalued dependencies in the relational schemas CUSTOMER, KTVSTUDIO, BOOKING, and RATE. Find all minimal keys in the relational schemas CUSTOMER, KTVSTUDIO, BOOKING, and RATE. List the derivations of all minimal keys. For each one of the relational schemas find the highest normal form a schema is in. List the justifications for each highest normal form found. Decompose all relational schemas that are not in 4nF into 4NF. List all relational schemas obtained from the decompositions. Remember to indicate the primary key and foreign keys (if any). (ii) (iii) (iv)
Analysis of relational schemas and normalization Consider the following conceptual schema of a sample database domain that contains information about customers' booking of KTV studio. book has CUSTOMER custPhone name preferences [0..*] KTVSTUDIO studioName location equipmentList[0..*] RATE ID startDateTime rateType unitPrice ID ID BOOKING duration specialRequest[0..*] A database designer applied a process of logical design, and he/she transformed the conceptual schema into the following collection of relational schemas. CUSTOMER(custPhone,name,preferences) KTVSTUDIO(studioName, location, equipment List,rateType) BOOKING(custPhone, studioName, statDateTime,duration,specialRequest) RATE(rateType,untPrice) (i) Find all functional and multivalued dependencies in the relational schemas CUSTOMER, KTVSTUDIO, BOOKING, and RATE. Find all minimal keys in the relational schemas CUSTOMER, KTVSTUDIO, BOOKING, and RATE. List the derivations of all minimal keys. For each one of the relational schemas find the highest normal form a schema is in. List the justifications for each highest normal form found. Decompose all relational schemas that are not in 4nF into 4NF. List all relational schemas obtained from the decompositions. Remember to indicate the primary key and foreign keys (if any). (ii) (iii) (iv)
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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![Analysis of relational schemas and normalization
Consider the following conceptual schema of a sample database domain that
contains information about customers' booking of KTV studio.
book
has
CUSTOMER
custPhone
name
preferences [0..*]
KTVSTUDIO
studioName
location
equipmentList[0..*]
RATE
ID
startDateTime
rateType
unitPrice
ID
ID
BOOKING
duration
specialRequest[0..*]
A database designer applied a process of logical design, and he/she
transformed the conceptual schema into the following collection of relational
schemas.
CUSTOMER(custPhone,name,preferences)
KTVSTUDIO(studioName, location, equipment List,rateType)
BOOKING(custPhone, studioName, statDateTime,duration,specialRequest)
RATE(rateType,untPrice)
(i)
Find all functional and multivalued dependencies in the relational schemas
CUSTOMER, KTVSTUDIO, BOOKING, and RATE.
Find all minimal keys in the relational schemas CUSTOMER, KTVSTUDIO,
BOOKING, and RATE. List the derivations of all minimal keys.
For each one of the relational schemas find the highest normal form a
schema is in. List the justifications for each highest normal form found.
Decompose all relational schemas that are not in 4nF into 4NF. List all
relational schemas obtained from the decompositions. Remember to
indicate the primary key and foreign keys (if any).
(ii)
(iii)
(iv)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdfef1900-6b6b-4241-b7c7-4b23c6e468f2%2F71e12229-9810-4ba2-84ef-5678573c7448%2Frxs5gvk_processed.png&w=3840&q=75)
Transcribed Image Text:Analysis of relational schemas and normalization
Consider the following conceptual schema of a sample database domain that
contains information about customers' booking of KTV studio.
book
has
CUSTOMER
custPhone
name
preferences [0..*]
KTVSTUDIO
studioName
location
equipmentList[0..*]
RATE
ID
startDateTime
rateType
unitPrice
ID
ID
BOOKING
duration
specialRequest[0..*]
A database designer applied a process of logical design, and he/she
transformed the conceptual schema into the following collection of relational
schemas.
CUSTOMER(custPhone,name,preferences)
KTVSTUDIO(studioName, location, equipment List,rateType)
BOOKING(custPhone, studioName, statDateTime,duration,specialRequest)
RATE(rateType,untPrice)
(i)
Find all functional and multivalued dependencies in the relational schemas
CUSTOMER, KTVSTUDIO, BOOKING, and RATE.
Find all minimal keys in the relational schemas CUSTOMER, KTVSTUDIO,
BOOKING, and RATE. List the derivations of all minimal keys.
For each one of the relational schemas find the highest normal form a
schema is in. List the justifications for each highest normal form found.
Decompose all relational schemas that are not in 4nF into 4NF. List all
relational schemas obtained from the decompositions. Remember to
indicate the primary key and foreign keys (if any).
(ii)
(iii)
(iv)
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