Rapid Application Development

Short cycles The principles of rapid application development (RAD) are recommended. In particular, short development cycles with a well-defined goal at the end of each cycle are good for morale and for moving a project forward. Also, we follow the maxim Don t wait until it s 100% done for any one phase. 

Inheritance was at one time widely hailed as the magic 00 mechanism that led to rapid application development, reduced costs, and so on. Programming by adaptation was the buzzphrase You program by adding to and overriding existing work, and you benefit from any improvements made to the base classes. In fact, this approach turned out to be useful to some extent but only under adherence to certain patterns connected with polymorphism. 

There is a cycle between the two documents (or two views) use the formal statements to form questions you use to improve the informal statements. In this way, you build a good understanding of the users views, help them understand what s possible, and keep them well involved in the development. (Any book on Rapid Application Development elaborates on this point.)... 

Implement a system that allows rapid application development and deployment with a minimum of support overhead. 

The described workbench is oriented to rapid application development (RAD) which nowadays is a most promising part of the information technology. 

Rapid Application Development (RAD) emphasizes user involvement, prototyping, software reuse, the use of automated tools, and small development teams. The RAD life eyele, sometimes ealled a spiral life cycle, consists of four basic phases ... 

IPCs are scalable and allow modular expansion based on PC technology. Rapid Application Development (RAD) is even more relevant with the range and sophistication of development tools available, making developments cheaper and return on investment more attractive. 

Iterative or Rapid Application Development (RAD) is frequently employed in the development of configurable information systems. Where this approach is used, a team is normally formed comprising system integrators and key users who collectively develop the preferred solution. The benefit of such an approach is that users are able to quickly visualize the system and therefore confirm its requirements at an early stage. Further, the system integrator is able to demonstrate the key features of the system and propose implementation options that meet both business and technical needs. The pitfalls of such an approach can be many if this phase of the project is not correctly managed. Typical pitfalls include the following ... 

Another life cycle often used in today s Windows oriented graphical environment is the spiral model, illustrated in Figure 15.4. This model, appropriate to rapid prototyping or other forms of inaemental development, acknowledges the use of the graphical Rapid Application Development (RAD) tools mentioned above. However, it brings them into a controlled framework so that the traditional benefits of the life cycle can be combined with the speed of development—the best of both worlds. 

Quality Tracking System Rapid Application Development redundant array of inexpensive disks random access memory reliability-centered maintenance relational database... 

Another feature that makes Visual Basic into a Rapid Application Development tool is that it supports both interpreted and compiled execution. When VB is used in interpreted mode, the tool allows the programmer to quickly see the effects of their code changes without a lengthy compilation directly to machine code. Of course, run-time performance is better when the code is actually compiled, and this can be done before distributing the application. 

The structures above assume that developers work in isolation from users and other, more business-orientated analysis specialists. The adoption of a rapid application development strategy would require this approach to be radically rethought. 

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