EPACK DATABASE SYSTEMS WITH LOOSELEAF
13th Edition
ISBN: 9780357475171
Author: Coronel
Publisher: CENGAGE L
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Expert Solution & Answer
Chapter 5, Problem 4P
Explanation of Solution
Crow’s Foot ER diagram for Tiny College:
The following data model shows the solution for the given question.
Explanation:
- In the above data model, the “Employee” is the supertype entity of “Staff”, “Admin” and “Professor” subtypes and the primary key of “Employee” entity is “Emp_No”. The primary and foreign key of these subtypes are “Emp_No”. Another foreign key of “Professor” entity is “Dept_Code”.
- The overlapping constraint (o) is used as a category symbol. Here the “Employee” supertype entity has optional subtype entity.
- The “Student” table contains the details of students and every student is get advices from the “Staff” table...
Expert Solution & Answer
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Année scolaire: 2024/2025
Collège SMARA
Devoir à domicile 1 semestre 2
Prof: NILAJ
PHYSIQUE CHIMIE
Nom et Prénom:
Niveau: 3APIC
Exercice 1:
Durée: 1 heure
1) Donner la définition des termes suivantes?
Le Mouvement :
La vitesse moyenne:
2) Répondre par « Vrai » ou «>
Un objet peut être en mouvement et au repos
Si la vitesse est constante, le mouvement sera uniforme.
3) Compléter les phrases par les termes qui conviennent :
Pour déterminer le mouvement ou le repos d'un objet, vous devez choisir un autre objet appelé le
d'un point d'un corps mobile est l'ensemble des positions qu'il
occupe durant son mouvement.
Il y a trois types de trajectoires: circulaire.
La distance de freinage dépend de
4) Cocher la bonne réponse?
> La relation entre la vitesse, la distance et le temps:
d
Vm = dxt
> L'unité internationale de la vitesse moyenne est :
m/s
5) On considère la figure suivante :
Compléter le tableau par les mots suivants :
En mouvement au repos
A
C
Km/h
et
et l'
m. s-1
15
A
B
C
Sol…
5. Here is a tree corresponding to T(64) for an unknown recurrence relation:
32 + lg 64
8+ lg 16
2+ lg 4
2+lg4
2+lg4
8+ lg 16
2+lg4
7
7
7
7
7
7
7
7
Fill in the details for the corresponding recurrence relation:
T(n) =
T(n/4)+
T(1)=
Put scratch work below. Scratch work is not graded but may be used for regrade
partial credit.
Top screenshot is question, the rest are examples and explinations.
Chapter 5 Solutions
EPACK DATABASE SYSTEMS WITH LOOSELEAF
Ch. 5 - Prob. 1RQCh. 5 - What kinds of data would you store in an entity...Ch. 5 - Prob. 3RQCh. 5 - What is a subtype discriminator? Give an example...Ch. 5 - Prob. 5RQCh. 5 - What is a disjoint subtype? Give an example.Ch. 5 - What is the difference between partial...Ch. 5 - Prob. 8RQCh. 5 - According to the data model, is it required that...Ch. 5 - Prob. 10RQ
Ch. 5 - Prob. 11RQCh. 5 - Prob. 12RQCh. 5 - Prob. 13RQCh. 5 - Prob. 14RQCh. 5 - When implementing a 1:1 relationship, where should...Ch. 5 - What is time-variant data, and how would you deal...Ch. 5 - Prob. 17RQCh. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - Prob. 3PCh. 5 - Prob. 4PCh. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - Prob. 7PCh. 5 - Prob. 8CCh. 5 - Prob. 9CCh. 5 - Prob. 10C
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