Software Engineering Paradigm of 'Online Fresh Food Store'

The best model for online fresh food store is the prototype model. Software prototyping is the process of creating an incomplete model of the future full-featured software program, which can be used to let the users have a first idea of the completed program or allow the clients to evaluate the program. This has several advantages: The software designer and implementer can obtain feedback from the users early in the project. The client and the contractor can compare if the software made matches the software specification, according to which the software program is built. It also allows the software engineer some insight into the accuracy of initial project estimates and whether the deadlines and milestones proposed can be successfully met.

The process of prototyping involves the following steps

• Identify basic requirements: Determine basic requirements including the input and output information desired. Details, such as security, can typically be ignored.
• Develop Initial Prototype: The initial prototype is developed that includes only user interfaces. 
• Review: The customers, including end-users, examine the prototype and provide feedback on additions or changes. 
• Revise and Enhancing the Prototype: Using the feedback both the specifications and the prototype can be improved. Negotiation about what is within the scope of the contract/product may be necessary. If changes are introduced then a repeat of steps #3 ands #4 may be needed.

SOME ADVANTAGES OF PROTOTYPING

• Reduced time and costs: Prototyping can improve the quality of requirements and specifications provided to developers. Because changes cost exponentially more to implement as they are detected later in development, the early determination of what the user really wants can result in faster and less expensive software.

• Improved and increased user involvement: Prototyping requires user involvement and allows them to see and interact with a prototype allowing them to provide better and more complete feedback and specifications. The presence of the prototype being examined by the user prevents many misunderstandings and miscommunications that occur when each side believe the other understands what they said. Since users know the problem domain better than anyone on the development team does, increased interaction can result in final product that has greater tangible and intangible quality. The final product is more likely to be satisfy the users desire for look, feel and performance.

BEST PROJECTS TO USE PROTOTYPING
Prototyping is most beneficial in systems that will have many interactions with the users.

It has been found that prototyping is very effective in the analysis and design of on-line systems, especially for transaction processing, where the use of screen dialogs is much more in evidence. The greater the interaction between the computer and the user, the greater the benefit is that can be obtained from building a quick system and letting the user play with it.

Systems with little user interaction, such as batch processing or systems that mostly do calculations, benefit little from prototyping. Sometimes, the coding needed to perform the system functions may be too intensive and the potential gains that prototyping could provide are too small.

Prototyping is especially good for designing good human-computer interfaces. "One of the most productive uses of rapid prototyping to date has been as a tool for iterative user requirements engineering and human-computer interface design."