person_ID name address Person birth_date phone_number B date comments Visit outpatient ID Bed bed_number room_number care_centre_ID H person_ID date_hired name Employee CareCentre location HH description item_number unit_cost Consumption patient ID date item_ID time Item quantity total_cost |++ K person_ID contact_date Patient resident_flag name Laboratory location Treatment treatment_ID treatment_number treatment_name +H |++

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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Map the EER diagram to a relational schema and transform the relation into 3NF.

person_ID
name
address
Person
birth_date
phone_number
B
date
comments
Visit
outpatient ID
Bed
bed_number
room_number
care_centre_ID
H
person_ID
date_hired
name
Employee
CareCentre
location
HH description
item_number
unit_cost
Consumption
patient ID
date
item_ID
time
Item
quantity
total_cost
|++
K
person_ID
contact_date
Patient
resident_flag
name
Laboratory
location
Treatment
treatment_ID
treatment_number
treatment_name
+H
|++
Transcribed Image Text:person_ID name address Person birth_date phone_number B date comments Visit outpatient ID Bed bed_number room_number care_centre_ID H person_ID date_hired name Employee CareCentre location HH description item_number unit_cost Consumption patient ID date item_ID time Item quantity total_cost |++ K person_ID contact_date Patient resident_flag name Laboratory location Treatment treatment_ID treatment_number treatment_name +H |++
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  1. Consider the following query against the RVH database. Create secondary key indexes to optimize the performance of this query. State any assumptions. 

    For each treatment performed in the past two weeks, list the physicians performing the treatment (grouped by treatment) and the number of times each physician performed that particular treatment on that particular day. Order the list by treatment ID and by reverse chronological order for each treatment ID.

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Follow-up Question

Suppose the date treatment performed was not entered. What procedures are required to handle the missing data?

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Follow-up Question

Are there opportunities for horizontal or vertical partitioning of the database? Are there other opportunities to denormalize the relations of this database? If not, explain why. If yes, list the opportunity cases and explain how you might denormalize the database. 

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Besides the 3NF relations, what additional types of information are required to create a physical database design? (

 

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