Quality models strengths and weaknesses-

To browse Academia. Skip to main content. You're using an out-of-date version of Internet Explorer. Log In Sign Up. Various processes and methodologies have been developed over the last few decades to improve software quality, with varying degrees of success.

Quality models strengths and weaknesses

Quality models strengths and weaknesses

Quality models strengths and weaknesses

The life cycle defines a methodology for improving the quality of software and the overall development process. This model has 1. Export search results. Solomon PA Introduction: addressing air pollution and health science questions to inform science and policy. JavaScript is disabled for your browser.

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  • In most interviews, the topic of strengths and weaknesses will be addressed.
  • This list of strengths and weaknesses helps you to recognize those that apply to you.
  • Mike Simpson 48 Comments.
  • How do I say what I'm not good at without looking terrible and say what I am good at without bragging?
  • Waterfall Model This is the most common and classic of life cycle models, also referred to as a linear-sequential life cycle model.
  • Do you know how to answer what are your weaknesses?

To browse Academia. Skip to main content. You're using an out-of-date version of Internet Explorer. Log In Sign Up. Various processes and methodologies have been developed over the last few decades to improve software quality, with varying degrees of success.

There are several models for software to a variety of task or activities that take during the process. SDLC is the process consisting of a series of planned activities to develop or alter the software products.

It is a process followed for a software project, within a software organization. It consists of a detailed plan describing how to develop, maintain, replace and alter or enhance specific software.

The life cycle defines a methodology for improving the quality of software and the overall development process. Fixing in this context may be error correction or addition of further functionality. In a waterfall model, each phase must be completed before moving onto the next. This model has five phases: Requirement analysis and specification phase- The goal of this phase is to understand the exact requirements of the customer and to document them properly.

Design phase-The goal of this phase is to transform the requirement specification into a structure that is suitable for implementation in some programming language. Implementation and unit testing-Design is implemented, small modules are tested in isolation from the rest of the software products. Integration and system testing phase-This is very important phase. It is also a very expensive and consumes one third to one half of the cost of a typical development project.

In this model instead of freezing the requirements before coding or testing or design, a prototype is built to clearly understand the requirements. This prototype is built based on the e current requirements. Through examining this prototype, the clients get a better understanding of the features of the final product.

The prototype may be a usable program, but is not suitable as the final software product. Cycles are divided into smaller and easily managed iterations. Each iteration passes through a series of phases, so after each cycle you will get working software. The complete product is divided into reeases and the developer delivers the product release by Figure 4: Iterative Model VI. It does not require a useable product at the end of each cycle.

In evolutionary development, requirements are implemented by category rather than by priority. This are useful for projects using new technology that is not well understood. This is also used for complex projects where all functionality must be delivered at one time, but the requirements are unstable or not well understood at the beginning. The system requirements are defined in as much as possible by involving various users so as to identify the various aspects of the system.

The preliminary design is created. This is the most crucial step in the spiral model as it helps in developing cost effective strategies for working on a project. Each loop of the spiral represents one phase. No time spent on 1. Fundamental flaws 1.

Small projects and overhead tasks in approach do not programming such as planning, show up quickly exercises like documentation, 2. Rarely produces proof of concept , quality assurance, useful results demos and standards, 3.

Dangerous as there prototypes enforcement and is no way to access other non-coding progress, quality or activities. Requires little 4. Simple , easy to 1. Inflexible and does 1. For well- execute , intuitive not support understood and logical iterations problems 2. Controllable 2. Delivers results late 2. Consistent with cycle 3. Automation of many technology 3. Addressing existing manual practices mistakes is difficult system 4.

Minimizes task planning 4. User feedbacks are overhead not taken during 5. Benefits from 1. Increases 1. System with user input complexity of the novice users 2. As a working overall system 2. When there are model of the 2. Involves higher uncertainties in system is risks requirements provided, user 3. Involves gets a better implementing and understanding of then repairing the the system that is way a system is being developed built so errors are 3.

Errors and risks an inherent part of can be detected at the development a much earlier process stage, as the 4. Produces working 1. This model has 1. For businesses software early phases that are very where time is of during the rigid and do not essence lifecycle overlap 2. Where risk of a 2. More flexible as 2. Not all the long project scope and requirements are cannot be taken requirements gathered before 3.

Where changes can be starting the requirements are implemented at development; this not known low cost could lead to 3. Allows user problems related to feedbacks system architecture 4.

Testing and at later iterations. Each iteration can easier , as the have planning iterations are overhead small 5. This model can be 1. Constitutes high 1. System used even the risk and strong requirements early requirements management is are not known in cannot or will not required advance be specified 2. This method is used 2. Creating 2. The user can as an excuse for fundamentally experiment with hacking to avoid new software the system to documenting the 3.

Almost reflects 1. Complex and 1. Only for major reality of software intricate multimillion development 2. Requires extensive dollar efforts 2. Reports of usage management 2. Ill suited for small quite positive infrastructure efforts 3. Minimizes risks at 3. Without attentive early stage and knowledgeable thereby prevents management , it collapse fails 4. Lowest total cost 5.

Each iteration of the spiral can be tailored to suit the needs of the whole project IX. Prototype model used to develop online systems for transaction processing. Evolutionary model is useful when system requirements are not known in advance or when creating fundamentally new software. Spiral model is used for development of large, complicated and expensive projects like scientific Projects. Since spiral model approach enables the project term to address the highest risk at the lowest total cost.

References 1. Software Engineering -Sommerville 3. Software Engineering - Jibitesh Mishra 4. Essentials of Software Engineering -Frank F. A degree in Computer Applications from Delhi University in and , respectively. Related Papers. Download pdf. Remember me on this computer. Enter the email address you signed up with and we'll email you a reset link.

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Professional Development. Remember that these questions are essentially the same from different angles: the employer wants to know that you have the skill set, experience, and attitude necessary to get the job done. Make a list of your skills, dividing them into three categories:. Tropical Rainforest. When she's asked, "What are your greatest strengths and weaknesses?

Quality models strengths and weaknesses

Quality models strengths and weaknesses

Quality models strengths and weaknesses

Quality models strengths and weaknesses

Quality models strengths and weaknesses

Quality models strengths and weaknesses. List of Weaknesses

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No Downloads. Views Total views. Actions Shares. Embeds 0 No embeds. No notes for slide. Abstract The models were proposed to evaluate general or specific scopes of software products. This model started with a volume of 55 quality characteristics which have an important influence on quality, and called them "factors". The model classified three significant factors: applicability, maintainability, and adaptability.

McCall Model external factors product quality criteria Assess the relationships Classified in three major types External view of the software 11 factors Internal view of the software 23 quality criteria user view developer view Metrics to provide a scale and method for measurement factors reduced to eleven Correctness, Reliability, Efficiency, Integrity, Usability, Maintainability,Testability, Flexibility, Portability, Reusability, and Interoperability.

Adv:The major contribution of this model the relationship between the quality characteristics and metrics Dis adv: model not consider directly on the functionality of software products 9. Dromey Model Adv: model broad enough to work for different systems To increase understanding of relationship Attributes characteristics sub-attributes sub- characteristics model defined two layers high-level attributes subordinate attributes Dis adv: this model suffers from lack of criteria for measurement of software quality dynamic process modelling Software product quality attributes classified hierarchical tree structure characteristic s Sub characteristic s Six Functionality, Reliability, Usability, Efficiency, Maintainability and Portability Is used as part of a computer system, and are the result of internal software attributes highest level of the structure consists of the quality characteristics lowest level consists of the software quality criteria.

ISO IEC ModelAdvantages The characteristics are applicable to every kind of software Provide a framework for making trade-offs between software product capabilities The Comparison Method Assigning values Factors comparison Models comparison model selection Depends on the scope intended to be evaluated Well-known software quality models are considered in developing a new model Factors Selection are collected and combined in one structural tree Fa, Fb…Fn the sub factors are combined under their factors S1, S2, Sn.

FactorsWeighting the weight of factors W1, W2……. Wn and sub factor Wa, Wb……Wm are assigned FactorsValues the value of the same factor within the selected models is calculated Formula 1 the total value of each model is calculated Formula 2 , based on the calculated values of their factors.

The Comparison total value for each factor is compared between the selected models It consists of four main tasks Model selection Case Study The comparison shows the main differences between these models. The following steps are followed in order to perform the task: — Step 1: combine the factors of the selected models and remove the repeated — Step 2: combine the sub-factors for each factor — Step 3: assign the weight for each factor — Step 4: assign the weight for each sub factor Step — 5: calculate the weight for each factor in every model independently — Step 6: compare the values of same factors in all of the selected models TotalValues Comparison The comparison goes behind the definitions of the software quality factors into sub factors and criteria.

Which is gave a clear picture of the differences between the models NET applications. Digital marketing. Email: tamimi itg7. You just clipped your first slide! Clipping is a handy way to collect important slides you want to go back to later. Now customize the name of a clipboard to store your clips. Visibility Others can see my Clipboard. Cancel Save.

Quality models strengths and weaknesses

Quality models strengths and weaknesses

Quality models strengths and weaknesses