Software Requirements Analysis Method

1. Overview of Software Development Project Requirements Analysis

Requirements analysis is an important stage in the software development process, especially in the development process of large-scale software projects (such as ERP systems). The main task of requirements analysis is to present the process of solving the user's "problem" in the form of a document. In layman's terms, it is an in-depth analysis of the "system" required by the user in terms of functionality, purpose, applicability, and reliability. . Generally, software project development requirements analysis includes four aspects: identification, analysis and summary of problems, generation of various requirements description documents and review of documents. It can be seen that the requirements analysis stage is not the realization stage of the user's software system, but the description of the system required by the user at the logical level. Therefore, it can be seen that the requirements analysis stage not only requires the participation of developers, but also requires the participation of users.

As the complexity and functionality of software development increase, requirements analysis, as an essential link in the definition phase of the software life cycle, plays a pivotal role and is the basis for subsequent project coding, testing, and maintenance phases, which is hard to imagine. , the user system that lacks the necessary requirement analysis can meet the needs of users very appropriately. In addition, in the development process of large and medium-sized software projects, once user needs change, it often results in huge code changes, system integration, and interface design work, which requires unpredictable manpower and financial resources. What needs to be mentioned is that requirement analysis is also an important part of software engineering research. In short, the requirements analysis in the software project development and design stage plays an important role in ensuring the continuity of follow-up work, in-depth understanding of the system, and later maintenance.

2. Research on software development project requirements analysis

2.1 Insufficient user participation

The requirements analysis stage is the process of in-depth division and analysis of user system function definition, performance description, and system reliability. Without user participation or insufficient user participation, it is not conducive to the smooth development and implementation of demand analysis work. Developers are often relatively proficient in the development process of the system and the use of development tools, but do not know much about the functions required by specific users: and the description of system functions by users usually has certain limitations, and even users They also don't understand their real needs. Therefore, if software requirements analysis lacks user participation, a consensus between users and developers cannot be reached, and it is easy for developers to have one-sided understanding of the system and incomplete functional analysis, which may even lead to rework in subsequent development and testing stages. Cause serious waste of human and financial resources.

2.2 Uncertainty of user needs

Due to the user's unfamiliarity with the development work and the user's uncertainty about the required functions (mainly referring to changes in requirements and increases in requirements), it is easy to lead to a sharp increase in software projects, the controllability of project scale, project complexity, and project complexity. Risks will become uncertain as demand changes. In addition, the uncertainty of user needs may lead to changes in the structure of the project code, which makes the principle of "high cohesion and low coupling" in the code specification easy to be broken, and the overall structure of the code is broken, which also brings difficulties to the maintenance of the code. Some difficulties; of course, the stability and robustness of the system are often affected. In short, the uncertainty of user needs is also an important aspect of the problems faced in the requirements analysis stage.

2.3 Insufficient depth and comprehensiveness of demand analysis

In addition to the deficiencies of the above content, the lack of in-depth and comprehensive requirements analysis is also one of the problems that are prone to occur at this stage. The lack of depth of analysis will lead to problems in the division of subsystem modules at the system boundary, function definition, and subsystem interface; insufficient comprehensive analysis of requirements may cause the functional integrity of users to be affected, and some user needs to be ignored. Patch-like codes appear in the later coding, and the structure of the system will be damaged. In severe cases, it may lead to a crisis in the project development cycle and project funds, or even a catastrophic impact on software development. It can be seen that when software requirements analysis is carried out, not only the cooperation of all parties is required, but also a complete and consistent understanding of the user system is required.

3. Discussion on solutions to software development project requirements analysis problems

3.1 Improve user participation and strengthen cooperation between users and developers

To solve the problem of software development project requirements analysis, first of all, we should strengthen the cooperation between users and developers to ensure the smooth communication of personnel from all parties. This is mainly based on the purpose of requirements analysis. Users more or less have their own opinions on functional requirements, while developers and designers have skilled development techniques, but relatively insufficient understanding of users' specific functions and other technical requirements. Therefore, through strengthening communication with each other, It can quickly form an in-depth understanding of the user system, and while communicating with each other, it is easy to achieve a comprehensive understanding of the system functions. It can be seen that improving user participation in the demand analysis stage is a necessary means to conclude related issues.

3.2 Do a good job in tracking the status of various requirements of the system

Software system requirements analysis includes the definition of operating environment, system stability guarantee, system functional requirements, system reliability and many other aspects. Especially in the definition of system functionality, it is not only necessary to strengthen the system definition at a higher logical level, but also to strengthen the data flow, data structure definition, sub-module definition, sub-module function division and accurate analysis and definition of each interface function. It can be seen that the requirements analysis involves a lot of content. While ensuring the effectiveness of the requirements analysis, the tracking of the status of each part of the requirements analysis module should be improved to ensure the accuracy of the content requirements analysis of each module, and finally form the accuracy guarantee of the overall requirements.

3.3 Improve the integrity and consistency of requirements analysis

In addition to strengthening personnel cooperation and tracking of various requirements, requirements analysis should also improve the integrity and consistency of requirements analysis. Ensure the consistency of software system logic definition and data flow, the consistency of the realization of the overall function and the function of each module, and improve the consistency of software functionality and stability, etc. Of course, in addition to the guarantee of consistency, the completeness and depth of system analysis should be further strengthened to ensure that the functional requirements and performance requirements of users can be better realized and satisfied, and avoid rewriting or reworking of later codes Appear. It can be seen that improving the integrity and consistency of software system requirements analysis is also an important aspect to solve its problems.

3.4 Make good use of various development tools for requirement analysis

Many aspects of requirements analysis need to form various documents for use in document review, and of course they are also the basic reference for system implementation. Therefore, make good use of various development tools for requirements analysis, such as various definition tools for data structure definition; data flow Diagram drawing tools; functional module design diagrams and other requirements analysis symbols are of great help to requirements analysis. Making good use of these symbolic tools, on the one hand, helps users understand the accuracy of system definitions and avoids "communication" problems caused by technology; Direct translation into a specific programming language. In short, making good use of demand analysis and development tools is also an effective means to solve the problem of demand analysis.

The above are the software development project requirements analysis problems and solutions introduced by Shenzhen Zuchuang Microelectronics Co., Ltd. for you. If you have software and hardware function development needs for smart electronic products, you can rest assured to entrust them to us. We have rich experience in customized development of electronic products, and can evaluate the development cycle and IC price as soon as possible, and can also calculate PCBA quotations. We are a number of chip agents at home and abroad: Songhan, Yingguang, Jieli, Ankai, Quanzhi, realtek, with MCU, voice IC, Bluetooth IC and module, wifi module. We have hardware design and software development capabilities. Covering circuit design, PCB design, single-chip microcomputer development, software custom development, APP custom development, WeChat official account development, voice recognition technology, Bluetooth wifi development, etc. It can also undertake the research and development of smart electronic products, the design of household appliances, the development of beauty equipment, the development of Internet of Things applications, the design of smart home solutions, the development of TWS earphones, the development of Bluetooth earphone speakers, the development of children's toys, and the research and development of electronic education products.