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代写留学生作业:The importance of software error-processing before implementation

论文作者:留学生论文论文属性:作业 Assignment登出时间:2011-04-27编辑:anterran点击率:1971

论文字数:699论文编号:org201104271122302282语种:英语论文 English地区:澳大利亚价格:免费论文

关键词:software error-processingimplementation代写留学生作业

1. The importance of software error-processing before implementation
We can see from the figure, in the phrases in a project lifecycle, there are 6 phases, listed in order is feasibility, analysis, design, program 代写留学生作业specification, programming phrase, and unit test; while from the software levels of testing, there are 4 steps, namely and orderly, acceptance test,  system test, integration test and unit test. If the software errors have not been corrected before implementation, the following problems will be caused:
Firstly, the results of software operation with errors are unpredictable. After implementation, the consequences caused by software errors may cause abnormal program operation, or wrong results, or over-occupation of resources, such as memory and CPU, or collapse of the entire system thus damage the procedures and data been processing.
Secondly, the software with errors will increase cost of ownership. After implementation, the software errors will undergo all software engineering processes, therefore cost is not used in the places where needs(是need还是needs?) it.
Thirdly, the software with errors will increase development cost. The software error caused by systematic architectural error may lead to the entire software modification from basis, which needs start from the very beginning and will substantially increase the development cost.
Finally, the software with errors may form software or system security vulnerabilities. After implementation, the software errors could leave the system or software itself the opportunities to be abused by malicious abusers like hacker.
However, if the software errors can be handled properly before implementation, the correctness of software architecture, process and results can be guaranteed, thus the software problems can be solved and the unnecessary cost can be reduced.

2. The process of dealing with client changes BEFORE and AFTER implementation
Receiving a client change requirement BEFORE software implementation, the processing procedures are as follows:
 (1) In the feasibility phrase, demonstrate what kind of impact will be brought to the entire software architecture and whether those changes can be realized in the original software architecture and function modules.
 (2) In the analysis phrase, define the client function and performance requirements to form the demand specification instruction as basis for software changes.
 (3) In the design phrase, reflect the client changes in the software architecture, function modules and coding to realize the software function and performance.
 (4) In the test phrase, because client changes have been presented in code, design and realization, the realization of client changes can conduct normal test as other function and performance requirements do, thus guarantee the realization of the software as a whole.
Receive a client change requirement AFTER implementation, the process is as follows:
In the feasibility demonstration phrase, first of all, demonstrate that keep the software architecture basis unchanged, whether the client change requirements can be realized only by adding relevant modules.
There are two possibilities, namely, it can be realized on the basis of original software architecture and it can not be realized. The following is the discussion of the two possibilities:
    a) It can be realized on the basis of original software arch论文英语论文网提供整理,提供论文代写英语论文代写代写论文代写英语论文代写留学生论文代写英文论文留学生论文代写相关核心关键词搜索。

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