A. Lab # : BSBA BIS245A-4A B. Lab 4A of 7: Database design based on data requirements and business rules focusing on interpreting business rules to determine relationships.
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A. Lab # : BSBA BIS245A-4A
B. Lab 4A of 7: Database design based on data requirements and business rules
focusing on interpreting business rules to determine relationships.
C. Lab Overview—Scenario/Summary
TCO(s):
1. Given a business situation in which managers require information
from a database, determine, analyze and classify that information
so that reports can be designed to meet the requirements.
2. Given a situation containing entities, business rules, and data
requirements, create the conceptual model of the database using a
database modeling tool.
Scenario:
You have been asked to create a database model using MS Visio Database
Model Diagram Template. The purpose of this iLab is to provide
experience designing, with limited instructions, a simple database based
on a list of data requirements and associated business rules.
Upon completing this iLab, you will be able to
1. create a new Visio file for database design; and
2. using the data requirements and the business rules provided, develop
a conceptual model (ERD), including attribute data types and
required field lengths.
D. Deliverables
Section
Part A Deliverable
YourNameLab4A.vsdx (Visio Diagram) Points E. Lab Steps
Preparation
1. Using Citrix for MS Visio and/or MS Access
a. If you are using the Citrix remote lab, follow the login
instructions located in the iLab area in Course Home.
2. Start Visio
a. Open Microsoft Ofice 2013, Visio application, or Page 1 of 5 b. if you are using Citrix, click on Microsoft Ofice 2013
Applications folder to start Visio.
Lab:
Step 1: Identify and create the entities
a. Open a new blank Database Model Diagram. If you need assistance with
this, refer to the Week 1 Lab Instructions. Be sure that all options are set
consistent to those used in previous weeks so that you generate your
model in Crow’s
Foot notation.
b. Save the file as YourName_Lab4A.vsdx.
c. Based on the information provided below, create the necessary entities
for the Catering by Caren database. If you need assistance to create the
entities, refer to the iLabs from Weeks 1 and 2.
Catering by Caren
Catering by Caren is an upscale catering company focusing on full, fourcourse gourmet dinners for groups from two to 40. Owner/chef James
Caren is wonderful in the kitchen, but has become overwhelmed with
the business side of running his rapidly growing operation. You have
been hired as his business manager, and you’ve decided to
computerize information on the engagements.
Chef Caren is excited about this project and has provided you with the
following information. He doesn’t know databases nearly as well as he
knows haute cuisine, so the data requirements are not well-organized,
nor is data in its smallest parts. He has noted whether the menu items
are appetizers, salads, main courses, or desserts. He has also provided
a list of the information he keeps on each customer and each booking.
By talking with Chef Caren, you feel you have enough information on
the company’s business rules to understand the relationships between
the data. Chef Caren is particularly concerned that you capture the
exact requirements for the menu for each engagement. For instance, if
20 people are to be served, he wants to know how many want the
vegetarian main course, the Kosher meals, and so forth.
At this point, you are going to use the following information to put
together an entity relationship diagram that you will then use with
Chef Caren to verify that you have accurately captured the
requirements.
Customers Name
Phone
Address
E-mail Address
Approved for credit or not
Engagements
Date
Time
Location
Menu
Number of Attendees
Special Diet Plates
Assistant Chef Assigned Employees Assigned
Payment Method (AmEx, Visa, MasterCard, Check, Cash, Bill)
Deposit Amount
Deposit Paid Date
Total Charges
Balance Paid Date
Menu Items
Item Name Description
Classification (Appetizer, Salad, Main Course, Dessert)
Special Diet Item (Kosher, Vegetarian) Employees
Name
Position
NOTE: You may find it helpful to consider the business rules in Step 4
in creating your entities. Step 2: Identify and create attributes (fields)
NOTE: Because you are creating your diagram in Visio, it will be
easier to create the attributes prior to the relationships.
a. Refer to the data requirements from Step 1 of this iLab. If
you have not already created the attributes (fields) in your
ERD, add them at this time.
b. Save your file and continue to Step 3. Step 3: Identify and designate the keys.
a. Determine whether an attribute exists in each table that will satisfy the
requirements of a primary key. If no appropriate field exists, create a
field for this purpose.
b. Check the Primary Key property for the field(s) in each table using
the Visio column properties.
Step 4: Identify the relationships.
a. Using the information below under Business Rules for Catering by
Caren, create the relationships between the entities created in
Steps 1 and 2.
b. Notice that, where many-to-many relationships exist, you will need to
create associative entities. If you are not sure of the process to create
relationships in Visio, refer to the iLabs for Weeks 1 and 2. You created
an associative entity in Week 2.
c. For any associative entities created, enter necessary fields. You may
also need to designate or create a primary key.
NOTE: If the relationship is mandatory (must have at least one…) you right
click the relationship, then choose Select Begin Symbol and
choose \"zero or more\" or \"1 or more\" as appropriate.
BUSINESS RULES
Business rules help determine the relationships between data
that should help you design the relationships between your
entities.
1. Each customer can book many engagements over time, but
each engagement is placed by only one customer. 2. One assistant chef is assigned to each engagement. An
assistant chef may work many engagements over time, but
each engagement will have only one assistant chef assigned.
3. Each engagement will have many menu items. Each menu
item may be served at many engagements. When a menu
item is selected, the number of servings required for the
event must be recorded. (Hint: Remember that an associative
entity may have attributes!)
4. Each engagement must have at least one assistant chef assigned.
There may be many other employees assigned to the
engagement. Each employee may work many engagements.
However, some employees never work engagements.
5. Only one engagement may be scheduled for any particular
date and time. Lab 4A Final Deliverables
a. YourNameLab4A.vsdx (Visio Diagram)—from iLab 4A
Submit this file to the Week 4 iLab Dropbox.
END OF LAB Read more
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