Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Question
Chapter 2, Problem 5P
Program Plan Intro
Crow’s Foot notation:
In the Crow’s Foot model by the three-pronged crow’s foot to exhibit the “many” side relationship.
- In this notation, “1”is represented as a short line segment.
- “M” is represented as three-pronged crow’s foot.
- The relationship name is represented above the relationship line.
Crow’s Foot diagram for DealCo:
The following diagram shows the DealCo relational diagram that describes the initial entities and attributes for the DealCo stores, which is located in two regions of the country.
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Using Figure P2.4 as your guide, work Problems 4–5. The DealCo relational diagram shows the initial entities and attributes for the DealCo stores, which are located in two regions of the country
Identify each relationship type and write all of the business rules.
Answer these questions please.
1-Draw the Relational Schema for the relationship(s) between STORE and REGION.
2-Draw the Relational Schema for the relationship(s) between EMPLOYEE and STORE
3-Draw the Full Entity Relationship diagram showing the relationships among EMPLOYEE, STORE, and REGION
Question 1
Show the relationships between entities and use table bridges between entities if necessary.
Chapter 2 Solutions
Database Systems: Design, Implementation, & Management
Ch. 2 - Prob. 1RQCh. 2 - What is a business rule, and what is its purpose...Ch. 2 - How do you translate business rules into data...Ch. 2 - Prob. 4RQCh. 2 - Explain how the entity relationship (ER) model...Ch. 2 - Prob. 6RQCh. 2 - Prob. 7RQCh. 2 - Prob. 8RQCh. 2 - Prob. 9RQCh. 2 - Prob. 10RQ
Ch. 2 - What is a relationship, and what three types of...Ch. 2 - Give an example of each of the three types of...Ch. 2 - What is a table, and what role does it play in the...Ch. 2 - Prob. 14RQCh. 2 - Prob. 15RQCh. 2 - Prob. 16RQCh. 2 - Prob. 17RQCh. 2 - Prob. 18RQCh. 2 - Prob. 19RQCh. 2 - Prob. 20RQCh. 2 - Prob. 21RQCh. 2 - Prob. 22RQCh. 2 - Prob. 23RQCh. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Using Figure P2.6 as your guide, work Problems 68....Ch. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Typically, a hospital patient receives medications...Ch. 2 - Prob. 10PCh. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17P
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- you will need to create an entity relation (E-R) diagram using the Crow's foot symbols that models the problem. This will include: Summarise the ERM's components, and names the entities and their relationship (As given in Table) Table 4.4 Components of the ERM Entity Relationship Connectivity Entity SCHOOL operates 1:M DEPARTMENT DEPARTMENT has 1:M STUDENT DEPARTMENT employs 1:M PROFESSOR DEPARTMENT offers 1:M COURSE COURSE generates 1:M CLASS SEMESTER includes 1:M CLASS PROFESSOR is dean of 1:1 SCHOOL PROFESSOR chairs 1:1 DEPARTMENT PROFESSOR teaches 1:M CLASS PROFESSOR advises 1:M STUDENT STUDENT enrolls in M:N CLASS BUILDING contains 1:M ROOM ROOM is used for 1:M CLASS Note: ENROLL is the composite entity that implements the M:N relationship “STUDENT enrolls in CLASS.” all entities, relationships (including names), and…arrow_forwardWhat two attributes must be contained in the composite entity between STORE and PRODUCT? Use proper terminology in your answer.arrow_forwardDraw an ER diagram that represents the main aspects of the Apple products database (entities, attributes, relationships, mapping cardinalities, etc.) Entity Sets: Customer Preference Apple product Store Factory Product_Item Relationships: Buys Sells Contracts Produces Has Contains Customer buys apple product Store sells apple product Factory contracts_with Store Factory produces apple product Customer has preferences Store contains product_itemarrow_forward
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