Methodologies in OOAD
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The document discusses three methodologies for object-oriented analysis and design: CRC (Class Responsibility Collaborator), which involves finding classes, responsibilities, and collaborators; OOSD (Object Oriented Structured Design), which provides a single architectural design notation to support software design; and OORASS (Object Oriented Role Analysis, Synthesis and Structuring), which emphasizes the roles played by objects and aims to support the software lifecycle through integrated and separated descriptions that enable reuse.
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Patient: Person
Treats: Association
- assistant: Person
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Role names for a ternary association
Generalization
Generalization is a taxonomic relationship
between a more general class and a more
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class diagramShohan Ean CRC stands for Class, Responsibilities, and Collaborators. The goal of CRC is to provide the simplest conceptual introduction to object-oriented modeling. The heart of CRC is the CRC card, which is used to document classes and their responsibilities and collaborators. CRC cards do not use UML directly, but the information on the cards is later translated into a UML class diagram. The CRC process involves domain experts and facilitators walking through scenarios to identify class responsibilities, which are documented on the cards. The cards are then arranged to show class collaborations, and the resulting model is reviewed.
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1-PE-I-OOAD.pptxKALPANAC20 This document provides an overview of object-oriented analysis and design (OOAD). It discusses key OO concepts like classes, objects, encapsulation, and polymorphism. The document also outlines the unified process methodology for OO software development. This methodology uses use cases to capture user needs and a layered architecture with user interface, business, and access layers. The benefits of the OO approach include reuse, maintainability, and aligning software design with the real world.
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Methodologies in OOAD
- 3. CRC (Class Responsibility Collaborator) Features Of The Class Other Connected/Dependent Classes
- 4. How To Create CRCs ? 1. Find classes. 2. Find responsibilities. 3. Define collaborators. 4. Move the cards around.
- 5. CRC Model
- 6. OOSD Object Oriented Structured Design
- 7. OOSD (Object Oriented Structured Design) “Goal of OOSD is to provide a single architectural design notation that can support every software design."
- 8. OOSD (Object Oriented Structured Design) 1. OOSD notation is neutral. 2. Designers can develop and use their own design esthetics and design metrics within the framework of OOSD. 3. OOSD supports a wide range of design philosophies. Properties :-
- 10. OORASS Object Oriented Role Analysis, Synthesis and Structuring
- 11. OORASS (Object Oriented Role Analysis, Synthesis and Structuring) “OORASS is an analysis and design method which emphasizes the role played by objects in the system."
- 12. OORASS (Object Oriented Role Analysis, Synthesis and Structuring) Goals :- 1. Total lifecycle support – Support For Lifecycle of the software. 2. Integrated description – Includes Formal Or Informal Description Of Everything. 3. Separation of concerns – Programs Should be Understandable in parts. 4. Reuse – Should Implement Reusability on every asset of the product.
- 13. Thank You