Question Description
Application 1: Data Modeling
In your earlier analysis efforts, specifically in structuralmodeling, you examined the organization of data within a system. Theapproach that you used in analyzing that data structure was anobject-oriented approach. In this Application you use a structuredapproach to model the data flow processes as you develop the dataaspect of your design.
Consider this scenario: Quality Tools is a company that sells a lineof high-quality tools through an online store. When customers placeorders on the company’s website, the system checks to see if the itemsare in stock, issues a status message to the customer, and generates ashipping order to the warehouse, which fills the order. The systemautomatically bills the customer when the order ships. The system alsoproduces various reports.
For this Application, perform the following:
- Draw a context diagram for the order system.
- Draw a Level 0 DFD for the order system.
- Justify the choices you made in your context diagram and DFD.
- Briefly compare the structured approach you use here with the object-oriented approach outlined in your reading.
Cite your sources according to APA guidelines.
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Application 2: Database Design
When you design a system, how its data is stored, optimized, andaccessed are among your primary concerns. If your system cannot workefficiently with well-structured data, then your design would not be ofmuch use to your organization.
For this Application, imagine that you are a systems analyst for abookstore. You are designing a system to sell books, CDs, and DVDsonline. Using what you have learned about data management layer design,address the following in a 2- to 3-page paper:
- Which object-persistence format is best for this system?
- How do the problem-domain classes map to the selected format?
- What techniques would best optimize the design’s processing efficiency?
- What do you need to consider when you design the data access andmanipulation (DAM) classes for the system? Create one DAM class as anexample.
- Explain each of your recommendations and justify the design choices.
Cite your sources according to APA guidelines.
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