Object oriented systems analysis and design

Overview[ edit ] This section may require cleanup to meet Wikipedia's quality standards. The main difference between object-oriented analysis and other forms of analysis is that by the object-oriented approach we organize requirements around objects, which integrate both behaviors processes and states data modeled after real world objects that the system interacts with.

For example, a typical implementation of OOA is to create an object model for an application. The goal of the analysis phase is to create a functional model of the system regardless of constraints such as appropriate technology.

difference between object oriented analysis and object oriented design

Share this:. The analyst will need to write class specifications for each class including the attributes, methods, and their descriptions.

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To define object-oriented analysis we must first define what we mean by an object. Main article: Object-oriented modeling Object-oriented modeling OOM is a common approach to modeling applications, systems, and business domains by using the object-oriented paradigm throughout the entire development life cycles.

Develop and document the system.

Object oriented analysis and design in hindi

As a result, in object-oriented processes "analysis and design" are often considered at the same time. The cycle is repeated with analysis of the next part, design, and some implementation, and it is repeated until the project is completed. It indicates that two classes are similar but have some differences. In this phase the analyst identifies the actors and the major events initiated by the actors. All tangible entities student, patient and some intangible entities bank account are modeled as object. Andrew Powell-Morse in Design Patterns , Software Design Most developers are well-aware of the concepts of object-oriented development, but those same concepts originate from a broader approach to the entire software development life cycle known as object-oriented analysis and design OOAD. Program is divided into number of submodules or functions. Common models used in OOA are use cases and object models. Documentation is critical. The analyst goes through problem and identification phases, an analysis phase, and a design phase as shown in the figure below.

Using the structural representation of the system, the analyst distributes the functionality of the system over the evolving structure to create a behavioral representation of the evolving system.

This modularity makes system development easer to grasp, easer to share among members of a project team, and easer to communicate to users.

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Object Oriented Approach