--%>
Assignment Help - homework help

  Formal Method Model

Introduction to Formal Method Model

Formal methods model consists of a set of activities that establishes the formal mathematical specification of computer software. In this model initial a mathematical specification is constructed, which can be written in either languages VDM or languages Z. The specification is then transformed stage by stage into the working software. That why it is also called as the transformation mode. So the main aim of this model is to convert the formal mathematical specification of a system specification to an executable program. This model is concerned to the theoretical work on formal specification. This basic formal system development is shown in fig.2.16.

501_Formal Method Model Homework Help.jpg

In the fig2.16 the partial development process which includes phases of design coding and unit testing are replaced by one of the transformational development process phase i.e. formal transformation. And one more phase formal specification. The included.

In the transformational development process. The formal specification is refined through a series of transformational into a program as shown fig 2.17.

1870_Formal Method Model Homework Help 1.jpg

T1, T2, T3, T4, Transformational steps

P1, P2, P3, P4, Process steps to transform the formal specification

R1, R2, R3,   Refinements

 The transformation process consist of following steps

1. Informal requirements are analyzed and functions are specified formally.

2. In next step, the development process takes this formal specification and transforms it into a more detailed, less abstract formal description.

3. This description becomes executable by some abstract processor.

4. If executability in the transformation process is achieved  soon,  then the executable description  may be viewed as an evolutionary prototypes that is obtained as a by product  of the transformation process.

An ideal transformation based process model is life fig 2.18.

469_Formal Method Model Homework Help 2.jpg

There are two main steps in this ideal model: requirement analysis. And optimization requirement analysis step provides formal requirements which are fed into the optimization step that provide the optimized result. This transformation process is controlled by a software engineer and may use the reusable components. Before being transferred, formal specifications are verified against the use expectations.

As shown in fig 2.18, the transformation life cycle is supported by a suitable computer aided software development environment. Thus environment provides tools for verifying requirements handling reusable components, performing optimizations and storing the history of development of the software. The last is an important feature for supporting future requests for changes and redevelopment will start from the appropriate point in the history of the previous development.

Advantage

The errors can be discovered and corrected.

Mathematical proofs use only numerical concepts.

Disadvantages

It is very time consuming.

Program proofs are very ling and impractical for large projects.

Training courses. Manuals, some material etc. Are required for inexperienced persons.

One approach in favour of this model is the clean room process.  Clean room process was originally developed by IBM. It basic idea is that it is based on the incremental development of the software. It correctness is demonstrates using a clean room approach. This approach is based on the B method have been applied successfully. It  concept depends on the following  application of statistical quality control technique  a structured architecture, a specification language based on a mathematical approach to  specifying function s requirements, elimination  of unit testing.

Latest technology based Software Engineering Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Formal Method Model homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Formal Method Model, project ideas and tutorials. We provide email based Formal Method Model homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Formal Method Model. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Software Engineering homework help and assignment help services. They use their experience, as they have solved thousands of the software engineering assignments, which may help you to solve your complex issues of Formal Method Model. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.