INFOST 410- 201 Ch.2 Exercise 2 (Fall 2022)
Chapter 2 Business Rules and Data Modeling
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Read Ch.1 and Ch.2 of the the textbook.
Use the contents of Figure 2.1 to work problems 1-2.
1. Write the business rule(s) that governs the relationship between AGENT and CUSTOMER.
One agent can have many customers, each customer only has 1 agent
.
2. Given the business rule(s) you wrote in Problem 1, create the basic Crow’s Foot ERD.
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INFOST 410- 201 Ch.2 Exercise 2 (Fall 2022)
Using Figure P2.4 as your guide, work Problems 3-4. The DealCo relational diagram shows the
initial entities and attributes for the DealCo stores, located in two regions of the country.
3. Identify each relationship type and write all of the business rules.
4. Create the basic Crow’s Foot ERD for DealCo.
Using Figure P2.6 as your guide, work Problems 5−6 The Tiny College relational diagram shows
the initial entities and attributes for Tiny College.
5. Identify each relationship type and write all of the business rules.
6. Create the basic Crow’s Foot ERD for Tiny College.
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INFOST 410- 201 Ch.2 Exercise 2 (Fall 2022)
7.
Typically, a patient staying in a hospital receives medications that have been ordered by a
particular doctor. Because the patient often receives several medications per day, there is a
1:M relationship between PATIENT and ORDER. Similarly, each order can include several
medications, creating a 1:M relationship between ORDER and MEDICATION.
a. Identify the business rules for PATIENT, ORDER, and MEDICATION.
b. Create a Crow's Foot ERD that depicts a relational database model to capture these
business rules.
8.
United Broke Artists (UBA) is a broker for not-so-famous painters. UBA maintains a small
network database to track painters, paintings, and galleries. A painting is painted by a
particular artist, and that painting is exhibited in a particular gallery. A gallery can exhibit
many paintings, but each painting can be exhibited in only one gallery. Similarly, a painting
is painted by a single painter, but each painter can paint many paintings. Using PAINTER,
PAINTING, and GALLERY, in terms of a relational database:
a. What tables would you create, and what would the table components be?
I would make the main tables Painter, painting, and gallergy.
b. How might the (independent) tables be related to one another?
Painters can many various paintings, each painting is painted by 1 artist, the gallery can show
many paintings, each painting is show in one gallery.
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