By: Brad Rudisail Contributor. By: Kaushik Pal Contributor. By: Leah Zitter Contributor. Dictionary Dictionary Term of the Day. Decentralized Finance. Techopedia Terms. Connect with us. Sign up. Term of the Day. CASE can also help as a warehouse for documents related to projects, like business plans, requirements and design specifications. One of the major advantages of using CASE is the delivery of the final product, which is more likely to meet real-world requirements as it ensures that customers remain part of the process.
CASE illustrates a wide set of labor-saving tools that are used in software development. It generates a framework for organizing projects and to be helpful in enhancing productivity. There was more interest in the concept of CASE tools years ago, but less so today, as the tools have morphed into different functions, often in reaction to software developer needs.
The concept of CASE also received a heavy dose of criticism after its release. Throughout the , CASE tool became part of the software lexicon, and big companies like IBM were using these kinds of tools to help create software. Various tools are incorporated in CASE and are called CASE tools, which are used to support different stages and milestones in a software development life cycle. Skip to content. Change Language.
There are advantages to the use of forward engineering as compared to starting from the scratch, as less time is spent. Developers depend on the already proven systems.
Currently, it surprises to realise that every system developer considers the use of forward engineering as an efficient method of getting around system development. Forward engineering is also currently used to convert diagrams stored in repositories into codes to be executed in any platform as indicated by their type.
Forward engineering does not use pre-existing codes in the development of new models, as it is the case with reverse engineering. It is therefore employed in the development of non-existent models. In information technology, forward engineering involves the formulation of skeleton codes from pre-existing models.
In both IBM rational software and visual analyst CASE tools, forward engineering is a common feature, as it is to most or all the other existing tools. In IBM rational software, forward engineering consists of a systematic process.
The model of the software is pertinent here. The components have to be identified first. The tasks involved are classes of software identification, checking the syntax, and class path. Code generation follows with a backup of the source suggested. The last step involves viewing the generated source. The complex procedure like that followed in IBM is not followed here. The process ends up being simpler and faster.
However, this compromises security and efficiency in the final product with low productivity. For small enterprises willing to use the CASE tools, visual analyst would offer a better alternative with similar objectives. In forward engineering, more codes are developed in visual analyst tools compared to IBM.
The argument holds because visual analyst offers a better and more flexible environment for model manipulation. Therefore, it edges out IBM based on this consideration despite the lower performance rating. Compared to forward engineering, reverse engineering entails the development of models from pre-existing codes Roger, , p. Through manipulation of existing codes, a software developer can develop new systems especially those that are currently not produced anymore to develop them.
This entails a careful study of the existing codes, their manipulation, and use to develop the new models. This step is important in the vital software tools that are hard to reproduce. Different IT companies have different thoughts on the efficiency of reverse engineering in the development of newer models with some preferring to use forward engineering at the expense of reverse engineering.
As the opposite of forward engineering, reverse engineering attempts to recreate models from codes that are pre-existing Roger, , p. The initial step involves meticulous scanning of the existing codes leading to the generation of new models.
These are distinct from previous versions, as they carry a unique character that differentiates them from other versions. The existing requirements dictate the type of code that is used, and the more diverse the code, the greater the flexibility of the model.
Reverse engineering is critical in generating models for systems that have since run out of market, or are no longer produced since they are out-dated. It also finds the use in the analysis of existing software to establish designs and their specifications. Reverse engineering is well utilised in both tools as required in the competitive market. The process guides the user in a series of steps with each step requiring a confirmation to proceed to the next.
The whole process of reverse engineering in IBM rational software involves about seventeen processes that are comprehensive and easy to follow. However, these require expertise and patience as they involve close follow-up. The code is automatically generated with fewer steps involved. This means that it is less involving besides its delivery of greater results compared to IBM. Reverse engineering, as it happens with visual analyst, involves a somewhat similar process to that of the IBM CASE tool with only few differences.
Pre-existing codes are used to generate newer models with the initial step of scanning being similar both processes. The creation of newer models to replace old and out-dated models is more successful when using the visual analysis CASE tool compared to the IBM rational software. Modelling tools are very important in the development of CASE tools. They are used in the development of newer software after an appropriate method is decided on. The tool used is referred as a modelling tool.
There are different tools that can be employed in the development of models. However, this depends on the convenience of the developer and the software involved.
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