ITERATIVE MODEL
An iterative life cycle model does not endeavor to begin with a full particular of necessities. Rather, advancement starts by determining and executing simply part of the product, which can then be checked on so as to recognize further prerequisites. This procedure is then rehashed, delivering another variant of the product for every cycle of the model. (Rastogi, 2015) General Overview of “Iterative Model” Table 3 Diagram of Iterative model Source (Batory, Singhal, Dasari, Geraci, & Sirkin, 1994)
In the diagram above, according to (Batory, Singhal, Dasari, Geraci, & Sirkin, 1994), when we work iteratively we make unpleasant item or item piece in one emphasis, then survey it and enhance it in next cycle thus on
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Hence in this phase the development and testing is done.
Evaluation phase: This phase allows the customer to evaluate the output of the project to date before the project continues to the next spiral.
Advantages and Disadvantages of a Spiral model and when to use this model
As stated above using the diagram, it can be stated according to (Boehm, 2000), there exist some advantages and disadvantages of Spiral models and below will illustrate some of the advantages and disadvantages of Spiral Model.
Advantages of Spiral model
• High amount of risk analysis hence, avoidance of Risk is enhanced.
• Good for large and mission-critical projects.
• Strong approval and documentation control.
• Additional Functionality can be added at a later date.
• Software is produced early in the software life cycle.
Disadvantages of Spiral model
• Can be a costly model to use.
• Risk analysis requires highly specific expertise.
• Project’s success is highly dependent on the risk analysis phase.
• Doesn’t work well for smaller projects. When to use Spiral model
• When costs and risk evaluation is important
• For medium to high-risk
The system development life cycle is a formal four-step process that can be followed in order to identify a problem and solve it. The first step is
As assessment is usually conducted at two phases in any project. (Burt, 2005) First it is conducted to
Evaluate the importance of understanding the various stages of the project life cycle and its possible contributions to a project.
A vendor evaluation is completed after the delivery of the product/service is completed. This process makes it easy for the buyer to determine if the vendor adequately fulfilled their needs and if they will use the vendor for future purchases (Grewal, p. 215)
The project life cycle consists of the conceptualization phase, the planning phase, the execution phase, and the termination phase.
Life cycle assessment addresses to all the three sustainability dimensions, environmental, economic, and social. LCA can track and document shifts in environmental impacts. Full characterization of product or process alternative helps decision makers or managers to make environmental trade off. Identification of environmental impacts in specific categories help Industrial decision makers analyze more specifically among different choices. LCA also can assess effects to one or more specific environmental areas at once.
The product life cycle concept derives from the phases through which a product undergoes, from its introduction, to its growth in the market, to the maturity it attains in that market, to the very last stage of declination. The
The Life Cycle Assessment process comprises four main stages: goal and scope definition, inventory analysis, impact assessment, and interpretation [2,3].
In the define phase proposals are formulated, estimated and tested for feasibility. The results will be presented to the senior management in order to receive a "go" for the project which often is in the form of a contract.
The project execution phase of the Project Management Lifecycle is exactly where the work gets done. This is the third phase of the project management life cycle, after Initiation and planning phase project enter into execution phase. In this phase literally project get start to build. Whether it is the building house of a project, changing a process project, or anything kind of project in between, where we can say that the work has begun.
The Define phase well-articulated in Identifying the business objectives. In this phase, the team had clearly listed down all the problems. The team had identified that their failure to understand the voice of customer is a major issue.
The feedback received in the second step of the process allows you to move into the third and last stage of the development process; building the product. Based on customer feedback, the company can revise any faulty product assumptions to create a better product. During the third step, the process begins all over again. Design changes and adjustments that comply with consumer suggestions take place now. Compliance with the feedback may only involve small adjustments to the basic MVP model, or they may need to pivot, throw out most of the basic pieces, and start all over again from scratch.
This is the phase where the requirements are noted, feedback regarding requirements are obtained from users
Phase 1- Define: Initially the problem (defects occurring) is clearly and specifically defined. Consists of the project objectives, project team, process and the critical customer requirements
One of the problems associated with maturity stages in the Product of Life Cycle is the problem of duplication. Different companies will make it different ways and make for competition. Which can make one company more profits then another.