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2. Minicase 2 page 195 ( note error in text the number 2 is in the wrong position - the case s tarts with The systems develoThe project team has developed a logical process model of the current sysiem. This model has been carefully checked for synta

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The project team has developed a logical process model of the current system. This model has been carefully checked for syntax errors. Last week, the team invited a number of system users to role-play the various data flow diagrams, and the diagrams were refined to the users' satisfaction. Right now, the project manager feels confident that the as-is system has been adequately represented in the process model.
The director of operations for West Star is the sponsor of this project. He sat in on the role-playing of the process model and was very pleased by the thorough job the team had done in developing the model. He made it clear to you, the project manager, that he was anxious to see your team begin work on the process model for the to-be system. He was a little skeptical that it was necessary for your team to spend any time modeling the current system in the first place, but grudgingly admitted that the team really seemed to under- stand the business after going through that work.
The methodology that you are following, however, specifies that the team should now turn its attention to developing the logical data model for the as-is system. When you stated this to the project sponsor, he seemed confused and a little irritated. "You are going to spend even more time looking at the current system? I thought you were done with that! Why is this necessary? I want to see some progress on the way things will work in the future!"
The system development team at the Wilcon Company is working on developing a new customer order entry system. In the process data entity attributes: of designing the new system, the team has identified the following
Inventory Order
Order Number (identifier) Order Date Customer Name Street Address
City State
Zip
Customer Type Initials District Number Region Number
1 to 22 occurrences of Item Name Quantity Ordered Item Unit Quantity Shipped Item Out Quantity Received
196
DATA MODELING
a. State the rule that is applied to place an entity in first normal form. Revise this data model so that it is in first normal form.
b. State the rule that is applied to place an entity into second normal form. Revise the data model (if necessary) to place it in second normal form.
c. State the rule that is applied to place an entity into third normal form. Revise the data model to place it in third normal form.
d. What other guidelines and rules can you follow to validate that your data model is in good form?

2. Minicase 2 page 195 ( note error in text the number 2 is in the wrong position - the case s tarts with 'The systems development team at the Wilcon ...'. The project team has developed a logical process model of the current sysiem. This model has been carefully checked for syntax errors. Last wock, the team invited a number of system usens to role-play the various data flow diagrams, and the diagrams were refined to the users' satisfaction. Right now, the project manager foels confident that the as-is system has been adcquately represented in the process model. The director of operations for West Star is the sponsor of this project. He sat in on the role-playing of the process model and was very pleased by the thorough job the team had done in developing the model. He made it clear to you, the project manager, that he was anxious to see your team begin work on the process model for the to-be system. He was a litte skeptical that it was necessary for your team to spend any time modeling the current system in the fint place, but grudgingly admitted that the team really secmed to understand the business after going through that work. The methodology that yoe are following, however, secifies that the tcam should now turn its atcention to developing the logical data model for the as-is sysiem. When you stated this to the projoct sponsor, he socmod confused and a little imitated. "You are going to spend even more time looking at the cument sysicm? I thought you were done with that! Why is this ncoessary? I want to see some progress on the way things will work in the futuret" The system development team at the Wilcon Company is working on developing a new customer order entry sysiem. In the process of designing the new system. the team has identified the following data entity attributes: Inventory Order Order Number (identifier) Order Date Customer Name Strect Address City State Zip Customer Type Initials District Number Region Number I to 22 occurrences of: Item Name Quantity Ordered Item Unit Quantity Shipped Item Out Quantity Received


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a. The rule applied to place an entity in first normal form is that each attribute should contain only atomic values (indivisible values). To revise the data model into first normal form, we need to remove any repeating groups and ensure that each attribute contains only atomic values. Here's the revised data model in first normal form:


Inventory Order: Order Number (identifier) Order Date Customer Name Customer Type Initials District Number Region Number

Customer: Customer Name City State Street Address Zip

Item:

Item Name
Item Unit

Order Line: Order Number (identifier) Item Name Quantity Ordered Quantity Shipped Quantity Received
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