After a careful analysis of the project requirement the phase of the product has to be planned . The abstract idea of customers have to carefully studied to convert the requirements into a sofware. Skilled and experienced software engineers recognize incomplete, ambiguous, or even contradictory requirements at this point. Frequently demonstrating live code may help reduce the risk that the requirements are incorrect.
Once the general requirements are gathered from the client, an analysis of the scope of the development should be determined and clearly stated. This is often called a scope document.
Certain functionality may be out of scope of the project as a function of cost or as a result of unclear requirements at the start of development. If the development is done externally, this document can be considered a legal document so that if there are ever disputes, any ambiguity of what was promised to the client can be clarified.
The planning strategy that we use had been deployed in all our IEEE projects developed with Grace software solutions which ensures that you have a trouble free application development experience.
During the Design Phase, the system is designed to satisfy the requirements identified in the previous phases. The requirements identified in the Requirements Analysis Phase are transformed into a System Design Document that accurately describes the design of the system and that can be used as an input to system development in the next phase.
Objectives:Successful completion of the Design Phase should comprise:
§ Transformation of all requirementsinto detailed specifications covering all aspects of the system
§ Assessment and planning for security risks
§ Approval to progress to the Development Phase
§ The purpose of the Design Phase is to transform the requirements into complete and detailed system design specifications. Once the design is approved, the Development Team begins theDevelopment Phase
§ The design strategy that we use had been deployed in all our IEEE projects developed with Grace software solutions which ensures that you have a trouble free application development experience.
After having the user acceptance of the new system developed, the implementation phase begins. Implementation is the stage of a project during which theory is turned into practice. The major steps involved in this phase are:
§ Acquisition and Installation of Hardware and Software
§ User Training
The hardware and the relevant software required for running the system must be made fully operational before implementation. The conversion is also one of the most critical and expensive activities in the system development life cycle. The data from the old system needs to be converted to operate in the new format of the new system. The database needs to be setup with security and recovery procedures fully defined.
After the users are trained about the computerized system, working has to shift from manual to computerized working. The process is called Changeover. The following strategies are followed for changeover of the system.
1. Direct Changeover: This is the complete replacement of the old system by the new system. It is a risky approach and requires comprehensive system testing and training.
2. Parallel run : In parallel run both the systems, i.e., computerized and manual, are executed simultaneously for certain defined period. The same data is processed by both the systems. This strategy is less risky but more expensive because of the following facts:
§ Manual results can be compared with the results of the computerized system.
§ The operational work is doubled.
§ Failure of the computerised system at the early stage does not affect the working of the organization, because the manual system continues to work, as it used to do.
The implementation strategy that we use had been deployed in all our IEEE projects developed with Grace software solutions which ensures that you have a trouble free application development experience.
The system design needs to be implemented to make it a workable system. his demands the coding of design into computer language, i.e., programming language. This is also called the programming phase in which the programmer converts the program specifications into computer instructions, which we refer to as programs. It is an important stage where the defined procedures are transformed into control specifications by the help of a computer language. The programs coordinate the data movements and control the entire process in a system. A well written code reduces the testing and maintenance effort. It is generally felt that the programs must be modular in nature. This helps in fast development, maintenance and future changes, if required. Programming tools like compilers, interpreters and language like c, c++, and java etc., are used for coding .with respect to the type of application. The right programming language should be chosen.Testing
Before actually implementing the new system into operations, a test run of the system is done removing all the bugs, if any. It is an important phase of a successful system. After codifying the whole programs of the system, a test plan should be developed and run on a given set of test data. The output of the test run should match the expected results. Sometimes, system testing is considered as a part of implementation process.
Using the test data following test run are carried out:
§ Program test
§ System test
Program test :
When the programs have been coded and compiled and brought to working conditions, they must be individually tested with the prepared test data. All verification and validation be checked and any undesirable happening must be noted and debugged (error corrected).
System Test :
After carrying out the program test for each of the programs of the system and errors removed, then system test is done. At this stage the test is done on actual data. The complete system is executed on the actual data. At each stage of the execution, the results or output of the system is analyzed. During the result analysis, it may be found that the outputs are not matching the expected output of the system. In such case, the errors in the particular programs are identified and are fixed and further tested for the expected output. All independent modules be brought together and all the interfaces to be tested between multiple modules, the whole set of software is tested to establish that all modules work together correctly as an application or system or package.
When it is ensured that the system is running error-free, the users are called with their own actual data so that the system could be shown running as per their requirements.
The deployment strategy that we use had been deployed in all our IEEE projects developed with Grace software solutions which ensures that you have a trouble free application development experience.