Object-oriented - Systems Development Ali Bahrami Ppt

Based on Ali Bahrami’s seminal work, Object-Oriented Systems Development (OOSD) is a methodology that views software as a collection of discrete, encapsulated objects combining data and functionality. This approach contrasts with traditional functional methods by focusing on real-world entities to build modular, reusable, and maintainable systems. Core Concepts of OOSD

• Definition of implementation
• Writing the code

• Conceptual modeling
• Identifying objects and their attributes

References (Based on Bahrami’s Citations)

• Bahrami, A. (1999). Object Oriented Systems Development. Irwin/McGraw-Hill. ISBN: 978-0256253258.
• Bahrami, A. (2000). Object-Oriented Systems Development: Using the Unified Modeling Language. Course Technology. (Later editions link to UML).
• Jacobson, I., Booch, G., & Rumbaugh, J. (1999). The Unified Software Development Process. Addison-Wesley. (Supporting UML context).

Conclusion

Ali Bahrami’s exposition of Object-Oriented Systems Development provides a coherent and practical roadmap for transitioning from outdated structured methods. By centering development on the core principles of abstraction, encapsulation, inheritance, and polymorphism, and by adopting an iterative lifecycle with clear phases of OOA, OOD, and OOP, developers can produce software that is more resilient to change, more reusable, and more faithful to the problem domain. While not without its challenges, OOSD—as articulated by Bahrami—remains a foundational paradigm in modern software engineering. His work continues to inform how we analyze, design, and build complex systems, reinforcing that the true power of object orientation lies not in the language syntax, but in the underlying methodology. object-oriented systems development ali bahrami ppt

Ali Bahrami’s approach divides the development process into three primary phases: analysis, design, and implementation. 1. Object-Oriented Analysis (OOA) Definition of implementation Writing the code

Slide 3: Key Principles of OOSD

1. Improved Modularity: OOSD promotes modularity, which makes it easier to develop, test, and maintain complex systems.
2. Code Reuse: OOSD enables code reuse, which reduces development time and costs.
3. Easier Maintenance: OOSD makes it easier to modify and extend existing systems, as changes can be made at the class or object level.
4. Improved Readability: OOSD promotes readability, as the use of classes and objects makes code easier to understand and maintain.