Software Engineering and Environment: An Object-Oriented Perspective

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By the midnight of specified date, you are to finalize and freeze your project pages Final Report, User's Guide, API documentation, sources, executables, etc. This is the version from which you are to demo your software! Demos are to be done during scheduled time periods.

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Make an appointment directly with your instructor on a first-come first-served basis for a demo by email at least 24 hours before the Final deadline specify the slot you'd like by slot number. You are to submit your peer grades by the end of following day; please email them to Gulden as described in the Project Description document; do not forget to evaluate yourselves on a scale from 0 to 10, you must explain your reasons unless a score is a 0 or a Peer grades are to be kept strictly confidential! Failure to send in peer grades will certainly be penalized!

Then, you are to demo your software. Presentation Google slides and demo feel free to record a Youtube video are to be finished within 15 minutes.

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Please come prepared; the most unpleasant question you can ask is "So, what should we show or say? Well, it's your software; it's your demo!

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In the remainder of the time, we will ask you some questions about the project status and each student's role in the project! This distinction was popularized by Barry Boehm in a very influential paper on his Spiral Model for iterative software development.

With iterative models it is possible to do work in various stages of the model in parallel. So for example it is possible—and not seen as a source of error—to work on analysis, design, and even code all on the same day and to have issues from one stage impact issues from another. The emphasis on iterative models is that software development is a knowledge-intensive process and that things like analysis can't really be completely understood without understanding design issues, that coding issues can affect design, that testing can yield information about how the code or even the design should be modified, etc.

Although it is possible to do object-oriented development using a waterfall model, in practice most object-oriented systems are developed with an iterative approach. As a result, in object-oriented processes "analysis and design" are often considered at the same time.

What is Object-Oriented Analysis?

The object-oriented paradigm emphasizes modularity and re-usability. The goal of an object-oriented approach is to satisfy the "open closed principle". A module is open if it supports extension, or if the module provides standardized ways to add new behaviors or describe new states. In the object-oriented paradigm this is often accomplished by creating a new subclass of an existing class.

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  • A module is closed if it has a well defined stable interface that all other modules must use and that limits the interaction and potential errors that can be introduced into one module by changes in another. In the object-oriented paradigm this is accomplished by defining methods that invoke services on objects. Methods can be either public or private, i.

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    This reduces a source of many common errors in computer programming. The distinction between analysis and design is often described as "what vs.

    In analysis developers work with users and domain experts to define what the system is supposed to do. Implementation details are supposed to be mostly or totally depending on the particular method ignored at this phase. The goal of the analysis phase is to create a functional model of the system regardless of constraints such as appropriate technology. In object-oriented analysis this is typically done via use cases and abstract definitions of the most important objects.

    The subsequent design phase refines the analysis model and makes the needed technology and other implementation choices.

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    In object-oriented design the emphasis is on describing the various objects, their data, behavior, and interactions. The design model should have all the details required so that programmers can implement the design in code. The purpose of any analysis activity in the software life-cycle is to create a model of the system's functional requirements that is independent of implementation constraints.

    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. In other or traditional analysis methodologies, the two aspects: processes and data are considered separately. For example, data may be modeled by ER diagrams , and behaviors by flow charts or structure charts.

    Common models used in OOA are use cases and object models. For IEEE to continue sending you helpful information on our products and services, please consent to our updated Privacy Policy.

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    Access provided by: anon Sign Out. Views on an object oriented software engineering environment Abstract: Software development activities and artifacts may be approached from the perspective of many users and tools. Each perspective offers different information and functionality to perform particular activities.