Rad (Rapid Application Development Model)
Rapid application development
Republished from Developers.net
Rapid Application Development (RAD) is a marketing buzzword that almost every software development tool uses, yet one that rarely applies. At a high level it is an Application Development technique that uses Prototypes, Iterative Customization, and CASE Tools. This article will focus on RAD: its history, advantages and disadvantages, appropriateness for various problems, core elements, process, and additionally will focus on CASE tools that support RAD.
A. Overview
Rapid Application Development (RAD) is a software development methodology that focuses on building applications in a very short amount of time; traditionally with compromises in usability, features and/or execution speed. The term has recently become a marketing buzzword that generically describes applications that can be designed and developed within 60-90 days, but it was originally intended to describe a process of development that involves application prototyping and iterative development.
B. History
Rapid Application Development has been in existence for nearly 20 years, but is as valid today as it was when it was initially conceptualized. 1. The Problem
Processes developed in the 1970’s, such as the Waterfall development methodology, often resulted in the development of applications that did not meet client needs because applications took so long to build that requirements had changed before the system was complete. Thus, for larger projects, these methodologies frequently resulted in complete, but unusable, systems. The cause of the problem was identified in the strict adherence to completion of one lifecycle stage before moving on to the next lifecycle stage. Specifically, building an application based on requirements that have been frozen at a point in time means that the longer development takes, the more likely that business needs will change and invalidate the requirements that the system being developed is based
Republished from Developers.net
Rapid Application Development (RAD) is a marketing buzzword that almost every software development tool uses, yet one that rarely applies. At a high level it is an Application Development technique that uses Prototypes, Iterative Customization, and CASE Tools. This article will focus on RAD: its history, advantages and disadvantages, appropriateness for various problems, core elements, process, and additionally will focus on CASE tools that support RAD.
A. Overview
Rapid Application Development (RAD) is a software development methodology that focuses on building applications in a very short amount of time; traditionally with compromises in usability, features and/or execution speed. The term has recently become a marketing buzzword that generically describes applications that can be designed and developed within 60-90 days, but it was originally intended to describe a process of development that involves application prototyping and iterative development.
B. History
Rapid Application Development has been in existence for nearly 20 years, but is as valid today as it was when it was initially conceptualized. 1. The Problem
Processes developed in the 1970’s, such as the Waterfall development methodology, often resulted in the development of applications that did not meet client needs because applications took so long to build that requirements had changed before the system was complete. Thus, for larger projects, these methodologies frequently resulted in complete, but unusable, systems. The cause of the problem was identified in the strict adherence to completion of one lifecycle stage before moving on to the next lifecycle stage. Specifically, building an application based on requirements that have been frozen at a point in time means that the longer development takes, the more likely that business needs will change and invalidate the requirements that the system being developed is based