Project 4 Crc Cards And Class Diagramactivity Diagramthe Fol

Project 4 Crc Cards And Class Diagramactivity Diagramthe Following Ac

Project #4 CRC cards and Class diagram ACTIVITY DIAGRAM The following activity diagram depicts the process of buying eye glasses from the viewpoint of the patient. The first step is to see an eye doctor who determines if the patient needs glasses then gives the patient a prescription. The patient goes to a glasses store, where he selects the frame and places the order for the glasses. Once the glasses have been made, the patient returns to the store for a fitting and pays for the glasses. USE CASE DIAGRAM The following use case diagram illustrates the process of buying eye glasses.

CRC CARDS AND CLASS DIAGRAM The following concepts were identified from the Activity diagram and Use Case diagram above. Patient Prescription Eyeglasses Frame Lenses Order Doctor Store

ATTRIBUTES AND BEHAVIORS The system needs to remember at minimum the following attributes and perform the following operations System Attributes System Behaviors Eyeglasses getLenseID Eyeglasses getFrameID Order calculateTax Order calculateItemCost Order calculateTotalCost Customer getContact Customer getPaymentInfo Prescription getSpecification Lens getStrength Frame getStyle Store getDirections Doctor getAppointment Bill to address CC# Email address ID Customer Customer Customer

Customer Customer Customer Customer Doctor getID Eye glasses Base cost Eyeglasses Description Eyeglasses Discount cost Eyeglasses Manufacturer Eyeglasses Model Frame ID Lens ID Order Date Order Discount price Order ID Order Quantity Order Retail price Prescription Date Prescription specification Product ID (eyeglasses) Ship to address Store name Store phone Store address Store number Name Phone number (home) Phone number (work) PROJECT REQUIREMENTS 1. Create a CRC card for each class 2. Use the classes that were outlined for you and create the CLASS diagram for the system. ï‚· Determine which class each attribute belongs to. ï‚· Identify and add associations to the diagram ï‚· Name your associations ï‚· Add attributes and behaviors to the diagram ï‚· Identify and add multiplicity indicators to the diagram PROJECT DELIVERABLES 1. Upload your PDF version of the project to the assignment posting on blackboard 2. Use the cover page at the end of this handout as the first page of your assignment

Paper For Above instruction

Introduction

The process of purchasing eyeglasses involves multiple actors, attributes, and interactions, which can be systematically modeled using UML diagrams, including CRC cards, class diagrams, activity diagrams, and use case diagrams. These diagrams facilitate understanding and designing the system's structure and

behavior from the perspective of different stakeholders, primarily the patient in this context. This paper discusses the development of CRC cards, class diagrams, and activity diagrams to represent the eye-glasses purchasing process comprehensively.

CRC Cards Development

CRC (Class-Responsibility-Collaborator) cards serve as a foundational design tool to identify classes, their responsibilities, and collaborations. For the eye-glasses system, classes such as Patient, Doctor, Store, Prescription, Eyeglasses, Frame, Lenses, and Order are identified. Each class is summarized through a CRC card summarizing its purpose and interactions.

For example, the Patient class encapsulates attributes such as name, contact information, and payment details, and responsibilities like scheduling appointments and selecting glasses. The Prescription class manages details like specifications and the associated eye condition. Similarly, the Eyeglasses class maintains information about the model, manufacturer, and cost. These cards help clarify the roles of each class in the system.

Class Diagram Design

Using the identified classes and CRC cards, a class diagram is created. The class diagram visually models the system's static structure by defining classes, attributes, behaviors, and relationships among classes. Attributes are assigned based on the data necessary for each class—for example, the Store class includes attributes such as store name, address, and phone number, while the Order class has attributes like order ID, date, and total cost.

Associations between classes are established based on their interactions. For instance, the Patient class is associated with Order through a "places" relationship, with multiplicity indicating a patient can place multiple orders, but each order is associated with a single patient. Similarly, the Order class is linked to Eyeglasses, Lens, and Frame, representing the components of a complete pair of glasses. These associations are named to clarify their roles, such as "contains" or "includes." Multiplicity indicators are added to specify one-to-many or one-to-one relationships.

Activity Diagram Explanation

The activity diagram captures the process flow of purchasing eyeglasses from the patient's perspective. The flow begins with the patient visiting an eye doctor, who assesses the need for glasses and issues a

prescription. Next, the patient visits the store, selects a frame, and places an order for glasses. The glasses are manufactured, after which the patient returns for fitting and payment. This diagram emphasizes sequential actions, decision points, and concurrent activities, illustrating the overall process flow clearly.

Use Case Diagram Significance

The use case diagram visualizes the interactions between the patient and the system during the eyeglasses purchase process. It depicts actors like the Patient and System, and use cases such as "See Doctor," "Select Frame," "Place Order," "Fitting," and "Payment." This diagram helps clarify the system's scope and the responsibilities of each actor, serving as a basis for further development.

Conclusion

Developing CRC cards, class diagrams, activity diagrams, and use case diagrams provides a comprehensive understanding of the eyeglasses purchasing system. These models assist in organizing system requirements, establishing relationships, and facilitating communication among stakeholders. Properly designed UML diagrams ensure the system's functionality aligns with user needs, supporting efficient development and maintenance of the system.

References

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Note: The references provide credible scholarly sources for UML modeling and software engineering principles, aligning with the project's requirements.