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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Create an ERD based on the Crow’s Foot notation with Microsoft Visio, using the following business rules or requirements:
An INVOICE is written by aSALEREP. Each sales representative can write many invoices, but each invoice is written by a single sales representative.
The INVOICE is written for a single Customer. However, each customer can have many invoices.
An INVOiCE can include many detail lines (LINE), each of which describes one product bought by the customer.
The product information is stored in a PRODUCT entity.
The product's vendor information is found in a VENDOR entity.
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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