Designers on a software project must have a well thought out and well-executed design; therefore, many choose a structured methodology to approach their system development life cycle (SDLC) or object-oriented approach. Designers may decide to take an object-oriented (OO) approach to systems/software development, which is more iterative in nature and incremental. Compare and contrast the structured design approach with the OO approach to systems/software development. Ensure you also respond to at least 2 others and build on their responses to these topics. As an alternative discussion topic, design patterns, which are not complete designs that can drive code, provide the base for how to solve complex project and system issues. Describe some of the following patterns below and how they deal with the creation of objects, identification of common communications patterns between objects, provide identified relationships between entities, or patterns of organizational decision making. Creational design patterns Structural design patterns Behavioral design patterns E-business design patterns At least 400 words APA references with intext citations Purchase the answer to view it Purchase the answer to view it

A structured design approach and an object-oriented (OO) approach are two commonly used methodologies for systems/software development. While both approaches aim to achieve a well thought out and well-executed design, they differ in their underlying principles and approaches.

The structured design approach follows a linear, top-down process. It involves breaking down the system/software into smaller modules and designing each module separately. This approach emphasizes procedural programming and focuses on the flow of data and control within the system. Structured design creates a clear division of labor and responsibility, as different individuals or teams can work on different modules independently. However, the downside of this approach is that changes to one module may require modifications in other modules, resulting in a rigid and brittle design that is difficult to maintain.

On the other hand, the object-oriented approach takes a more iterative and incremental approach to systems/software development. It focuses on designing systems as a collection of interacting objects, each with its own data and behavior. The design is based on classes and objects, with an emphasis on encapsulation, inheritance, and polymorphism. Object-oriented design allows for modular and reusable code, as objects can be reused in different contexts. It also provides greater flexibility in system design, as changes to one object do not necessarily affect others. However, the object-oriented approach requires a deeper understanding of object-oriented programming concepts and may take longer to develop initially.

When comparing the two approaches, it is important to consider the specific requirements of the project and the skills and expertise of the development team. Structured design may be more suitable for projects that have well-defined and static requirements, where a linear approach can be followed effectively. On the other hand, the object-oriented approach is better suited for projects that require flexibility, extensibility, and reusability.

In terms of design patterns, they provide general solutions to recurring design problems and promote good design principles. Creational design patterns focus on object creation mechanisms, providing ways to create objects in a flexible and extensible manner. Examples of creational design patterns include the Factory Method, Abstract Factory, and Singleton patterns.

Structural design patterns deal with the composition of classes and objects to form larger structures. They provide ways to simplify the relationships between objects and improve the organization of code. Some common structural design patterns include the Adapter, Composite, and Decorator patterns.

Behavioral design patterns focus on the communication and interaction between objects. They define how objects interact with each other to achieve specific behaviors or functionalities. Examples of behavioral design patterns include the Observer, Strategy, and State patterns.

E-business design patterns are specifically tailored for e-commerce systems and address the unique challenges and requirements of online business. These patterns deal with aspects such as security, scalability, and the integration of various e-commerce components.

Overall, design patterns provide guidance and best practices for designing software systems. They help designers identify common problems and provide proven solutions, promoting reusability, extensibility, and maintainability.

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