Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 4, Problem 4P
Explanation of Solution
Entity Relationship (ER) Diagram:
The following figure illustrates the ER Diagram for given business rules using Crow’s Foot notation:
Explanation:
The above ERD, contains several entities such as “Customer”, “Invoice”, “Vendor”, “Product”, “Salessrep” and “Inv_Line”. Each entity has its own attributes.
- A customer can generates invoice form several sales representatives...
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An Art Museum needs to keep track of its artwork and exhibitions. The museum has a collection of
artwork. Each piece of art has a unique id [ArtID], an artist, year and title.
Artwork is categorized by type. There are two types, paintings and sculptures. Paintings have a
paintType and style. Sculptures have a material, height and weight.
Artwork is frequently shown in exhibitions. Each exhibition has a unique name, startDate, endDate.
A listing of the artwork displayed at an exhibition is also retained.
Below is an E-R diagram for a database to help the Art Museum. Provide appropriate names for
entities E1, E2, E3, E4 identifiers 11, 12, 13, 14 missing attributes and relationship cardinality RC1
and relationship type RT1.
Start_date
End_date
E1
E1
11
RC1
PaintType
Style
E3
13
A1
Title
Year
A/
A
A/
A/
A/
A/
A/
A/
A
A/
A/
E2
12
A/ E2
E3
E4
11
12
13
14
A1
A2
RC1
RT1
RT1
A2
Height
Weight
E4
14
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Business Rules:
Each musician at NewTalent should have a name, address, and phone number on the system. The Instruments used in the songs have a unique name, musical genre (i.e. rock, pop, hip hop), and type (i.e. string, piano, guitar). Every album recorded under the NewTalent label has a title, copyright date, format, and an album identifier. Each song recorded has a title and an author. Musicians can play several instruments, and an instrument can be played by multiple musicians. Every album contains several songs, but a song can only appear on one album. Songs are performed by one or more musicians, and a musician can perform numerous songs. Each album has one musician acting as its producer, although a musician can produce multiple albums.
Create an ERD for the above scenario that describes its business rules.
Use Crow's Foot notations and make sure to include all of the following:
All entities correctly identified with Primary key and any foreign key attributes.…
Chapter 4 Solutions
Database Systems: Design, Implementation, & Management
Ch. 4 - Prob. 1RQCh. 4 - What is a strong (or identifying) relationship,...Ch. 4 - Prob. 4RQCh. 4 - Suppose you are working within the framework of...Ch. 4 - Prob. 6RQCh. 4 - Prob. 7RQCh. 4 - Discuss the difference between a composite key and...Ch. 4 - What two courses of action are available to a...Ch. 4 - Prob. 11RQCh. 4 - Discuss two ways in which the 1:M relationship...
Ch. 4 - Prob. 13RQCh. 4 - Prob. 14RQCh. 4 - Briefly, but precisely, explain the difference...Ch. 4 - What are multivalued attributes, and how can they...Ch. 4 - Prob. 17RQCh. 4 - Prob. 18RQCh. 4 - What two attributes must be contained in the...Ch. 4 - Describe precisely the composition of the...Ch. 4 - Prob. 21RQCh. 4 - Prob. 1PCh. 4 - Create a complete ERD in Crows Foot notation that...Ch. 4 - Prob. 4PCh. 4 - Prob. 5PCh. 4 - Prob. 6PCh. 4 - Prob. 7PCh. 4 - Prob. 8PCh. 4 - Prob. 9PCh. 4 - Prob. 10PCh. 4 - Prob. 11C
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