- A.Lab # :BSBA BIS245A-4A
- Lab 4A of7: Database design based on data requirements and business rules focusing on interpreting business rules to determine relationships.
- C.Lab Overview—Scenario/Summary
- 1.Givena 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.Givena situation containing entities, business rules, and data requirements, create the conceptual model of the database using a database modeling tool.
You have been asked to create a database model using MS Visio Database
Model Diagram Template. The purpose of this Lab 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 Lab, you will be able to
- 1.create a new Visio file for database design;and
- 2.usingthe data requirements and the business rules provided, develop a conceptual model (ERD), including attribute data types and
required field lengths.
|Part A||YourNameLab4A.vsdx (Visio Diagram)|
- E.Lab Steps
- 1.UsingCitrix for MS Visio and/or MS Access
- Ifyou are using the Citrix remote lab, follow the login instructions located in the Lab area in Course Home.
- OpenMicrosoft Office 2013, Visio application, or
- ifyou are using Citrix, click on Microsoft Office 2013
Applications folder to start Visio.
Step 1: Identify and create the entities
- Opena 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
- b.Save the file as YourName_Lab4vsdx.
- Basedon 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 Labs from Weeks 1 and 2.
Catering by Caren
Catering by Caren is an upscale catering company focusing on full, four- course 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.
Approved for credit or not
Number of Attendees
Special Diet Plates
Assistant Chef Assigned Employees Assigned
Payment Method (AmEx, Visa, MasterCard, Check, Cash, Bill)
Deposit Paid Date
Balance Paid Date
Item Name Description
Classification (Appetizer, Salad, Main Course, Dessert)
Special Diet Item (Kosher, Vegetarian)
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.
- Refer to the data requirements from Step 1 of this Lab. If youhave notalready created the attributes (fields) in your ERD, add them at this time.
- b.Save your file andcontinue to Step 3.
Step 3: Identify and designate the keys.
- Determine whether anattribute 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.Checkthe Primary Key property for the field(s) in each table using the Visio column propertie
Step 4: Identify the relationships.
- Usingthe 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 entitie If you are not sure of the process to create relationships in Visio, refer to the Labs for Weeks 1 and 2. You created an associative entity in Week 2.
- For anyassociative 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 help determine the relationships between data that should help you design the relationships between your entities.
- 1.Eachcustomer can book many engagements over time, but each engagement is placed by only one customer.
- 2.One assistantchef 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.Eachengagement will have many menu item 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.Eachengagement must have at least one assistant chef assigned. There may be many other employees assigned to the engagement. Each employee may work many engagement However, some employees never work engagements.
- 5.Onlyone engagement may be scheduled for any particular date and time.
Lab 4A Final Deliverables
- YourNameLab4A.vsdx(Visio Diagram)—from Lab 4A
Submit this file.
END OF LAB
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