What are the steps of software development and the process of software development?

The main steps of software development are: project analysis, definitive development, requirements analysis, design, programming, and software testing.

Software delivery, acceptance, maintenance.

The specific steps are as follows:

1. The first process of software development is the analysis and determination of project development. The main thing is that after the software developer determines the project development, it needs to discuss with the demander to determine the goals and specific requirements of the demander's software development.

2. Requirements analysis, this step is also the stage to determine the specific ideas for the normal implementation of software development.

3. Software design should be designed according to the analysis results of software functional requirements in the previous stage, which involves the framework structure of software design.

The database of software system modules and software systems is mainly divided into general design and detailed design.

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4. The implementation steps of programming, programming is also based on software-based design, and all parts of software design are through computer programs.

Implemented.

5. Software testing, that is, after the customer's software is programmed according to the design, that is, the software program. After completion, it is necessary to modify the written program to form an overall framework, and the function is tested in three stages: unit, assembly, and system.

6. Software development is completed through the above core links. Then, after the software development, the customer's requirements were met, the software system was handed over to the customer, and the software installation program, the "User Installation Manual", and the test report were delivered to the customer.

and other documents to guide customers to install software and installation skills.

7. After the user accepts the software development and delivery, the actual operation runs the test. After the satisfactory results are achieved, the developed software is accepted.

8. Custom-developed software usually needs to provide after-sales service, maintain software, or modify application software programs according to the new needs of users to continuously meet the actual needs of customers.

After receiving the product project, the product manager should communicate with the customer in detail to confirm the details of the requirements, draw the thinking path, clarify the logical relationship, draw the prototype drawing, UI design the design drawing, the development technical team will divide the labor development, the test team will conduct the test, and the test will be no problem, and the operation team will carry out online promotion, pay attention to the feedback of the user, and then improve.

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1. Plan to define the overall problem to be solved, including understanding the user's requirements and the actual environment, from the technical, economic and social factors and other three aspects of research and demonstration of the feasibility of the software project, the preparation of the feasibility study report, the solution to the problem, and the available resources (such as computer hardware, system software, manpower, etc.) cost, can be achieved benefits and development progress estimates, the development of the implementation plan to complete the development task.

2. Analyze and do the software, call one Wu Chop +++ one one three three + ++ 驷柒驷驷.

Software requirements analysis is the analysis and assumption of a system for what kind of software to develop. It is a process of extracting the user's needs, removing the false and retaining the true, correctly understanding, and then expressing them in software engineering development language (formal functional specification, i.e., requirements specification).

3. Design and do software, call one Wu Pao +++ One One Three Three +++ 驷柒驷驷.

Software design can be divided into two phases: outline design and detailed design. In fact, the main task of software design is to decompose the software into modules, which refers to the program units that can realize the data and program description and executable program of a certain function.

4. EncodingSoftware coding refers to the conversion of software design into a program acceptable to the computer, that is, written as a "source program list" expressed in a programming language. A good understanding of the characteristics and programming styles of software development languages and tools will help you choose development tools and ensure the development quality of software products.

5. Test Software The purpose of software testing is to find as many bugs as possible at a small cost. The key to achieving this goal is to design a good set of test cases (test cases that make up the test data along with the functionality and the expected output). The key to designing a great set of test cases is to understand the test methodology.

Different test methods have different approaches to test case design.

6. Maintenance refers to some software engineering activities carried out on software products after the development (analysis, design, coding and testing) of software has been completed and delivered. That is, according to the operation of the software, the software is appropriately modified to adapt to the new requirements, as well as to correct the errors found in the operation. Write software problem reports, software modification reports.

Software development is generally divided into five phases:

1.Problem definition and planning.

This stage is a joint discussion between software development and requirements, mainly to determine the development goals and feasibility of the software.

2.Requirements analysis.

In the case of determining the feasibility of software development, a detailed requirements analysis is carried out on the individual functions that need to be implemented in the software. The requirements analysis phase is a very important stage, and if this stage is done well, it will lay a good foundation for the development of the entire software project. "The only constant is the change itself", and the software requirements are constantly changing and deepening during the development process of the software, so we must customize the requirements change plan to cope with this change to protect the overall project as it happens.

3.Software design.

In this stage, the entire software system should be designed according to the results of the requirements analysis, such as system framework design, database design, etc. Software design is generally divided into general design and detailed design. Also the software design will lay a good foundation for software program writing.

4.Program coding.

This stage is the transformation of the results of the software design into a program that can be run on a computer**. In the program coding, it is necessary to develop a system.

1. Write specifications that meet the standards. In order to ensure the readability and easy maintenance of the program. Improve the operational efficiency of the program.

5.Software testing.

After the software design is completed, it is necessary to conduct rigorous testing, and find and correct the problems in the software throughout the software design process. The whole test stage is divided into three stages: unit test, assembly test, and system test. The test methods mainly include white-box testing and black-box testing.

Step 1: Demand research and analysis.

1. The relevant system analyst and the user have a preliminary understanding of the requirements, and then use word to list the large functional modules of the system to be developed, what are the small functional modules of each large functional module, and when the relevant interface is more clear for some requirements, a small number of interfaces can be preliminarily defined in this step.

2. The system analyst has an in-depth understanding and analysis of the requirements, and uses word or related tools to make a document of the functional requirements of the document system according to his own experience and needs. This document will clarify the general large functional modules of the example system, what are the small functional modules of the large functional modules, and also exemplify the relevant interfaces and interface functions. 3 The system analyst and the user reconfirm the requirements.

Step 2: Outline the design.

First of all, the developer needs to carry out the outline design of the software system, that is, the system design. The outline design needs to consider the design of the software system, including the basic processing process of the system, the organizational structure of the system, the division of modules, the allocation of functions, the interface design, the operation design, the data structure design and the error processing design, etc., so as to provide the basis for the detailed design of the software.

Step 3: Detailed design.

On the basis of the outline design, the developer needs to carry out the detailed design of the software system. In the detailed design, the main algorithms, data structures, class hierarchies and invocation relationships involved in the implementation of specific modules are described, and the design considerations of each program (each module or subprogram) at each level of the software system need to be explained for coding and testing. It should be ensured that the requirements of the software are fully distributed to the software as a whole.

The detailed design should be detailed enough to be able to be coded according to the detailed design report.

Step 4: Coding.

In the software coding stage, the developer starts to write specific programs according to the design requirements for data structure, algorithm analysis and module implementation in the detailed design report of the perturbation software system, and realizes the functions of each module respectively, so as to realize the requirements for the function, performance, interface, interface and other aspects of the target system. Step 5: Test.

Test the written system. It is handed over to the user to use, and the user confirms each function one by one after using it.

Step 6: Prepare for software delivery.

After the software test proves that the software meets the requirements, the software developer shall submit to the user the target installer, the data dictionary of the database, the user installation manual, the user guide, the demand report, the design report, the test report and other products agreed in the contract between the two parties. The User Installation Manual should introduce in detail the requirements of the installed software for the operating environment, the definition and content of the installed software, the specific installation steps on the client, server and middleware, and the system configuration after installation. The "User Guide" should include the use process, operation steps, corresponding business introduction, special tips and precautions of each function of the software, and should also give examples when necessary.

Step 7: Acceptance.

User acceptance.

The software development process is as follows:

1. Analysis and determination of the purpose of project development.

This stage of the software development process is mainly after the software developer determines the development project, it is necessary to discuss with the demander to determine the needs of the demander for software development, achieve the goals and specific functions needed, etc., and determine whether it can be achieved.

2. Demand analysis.

This is the second stage of the software development process and the stage where you define the specific idea for the proper running of software development. Once it is determined that software development can be carried out, it is necessary to conduct a specific and detailed analysis of the functional requirements of the software that the customer needs to implement. At the same time, the changes that may occur in the development process should be considered, and the requirements change plan should be formulated to deal with the occurrence of special circumstances at any time to ensure the smooth progress of the software development process.

3. Design. Software design should design the framework structure, functional modules and databases of the software system according to the results of the analysis of software functional requirements in the previous stage. It is divided into two parts: general design and detailed design.

4. Programming. Each previous stage of the software development process is the basis for the implementation of the next stage. Programming is also based on the software design, the requirements of each part of the software design through the computer program ** to achieve operation, programming system.

1. Standardized program writing rules to ensure the understandability and maintenance of software programs.

5. Software testing.

According to the design, the customer software needs to be programmed to achieve the first level, that is, after the completion of the software program, it is necessary to test the written program to form an overall architecture and function of the unit, assembly and system three stages of testing, so as to test the correctness of the program writing and the adequacy of the customer demand function, so as to determine whether the software meets the development requirements, and it is also a process of finding and correcting problems.

6. Software delivery.

The software development process completes the software development through the above core links, and the next step is that after the software development meets the customer's needs, the developer will hand over the software system to the customer, and deliver the software installation program, database data dictionary, "user installation manual", "user guide", demand report, design report, test report and other products to the customer.

7. Acceptance. After receiving the software development results delivered by the developer, and carrying out actual operation, test and operation, and achieving satisfactory results, the user accepts the developed software.

8. Maintenance. Custom-developed software usually needs to provide after-sales service, regularly maintain the software, or modify the application software program according to the new needs of users, so that it can continue to meet the actual needs of customers.

The concept of software development

It is the process of building a software system or a software part of a system according to user requirements. Software development is a system engineering that includes requirements capture, requirements analysis, design, implementation, and testing. Software is generally implemented in some programming language.

Software development tools are usually used to develop them. Software is divided into system software and application software, and does not only include programs that can be run on a computer, but also files related to these programs are generally considered to be part of the software.

Software Development Process:

The software development process refers to the general process of software development and design, including the overall structure of the software, the composition of modules, the design of functions, the compilation, debugging, joint debugging, testing and other processes of the program.

Main steps: project analysis, determination of development, requirements analysis, design, programming, software testing, software delivery, acceptance, maintenance.

Detailed interpretation: The software development process is the general process of software design ideas and methods, including the first demand analysis of the software, the design of the software function and the implementation of the algorithm and method, the overall structure design of the software and the module design, coding and debugging, program joint debugging and testing, as well as writing, submission of a series of operations to meet customer needs and solve customer problems, if there is a higher demand, the software also needs to be maintained, upgraded, scrapped.