软件需求:软件需求包括三个不同的层次：业务需求、用户需求和功能需求。业

Software requirements: Software requirements include three different levels: business requirements, user requirements and functional requirements. Business requirements reflect the high-level target requirements of the organization or customer for the system and products, and they are described in the project view and scope document. The user requirements document describes the tasks that the user must complete to use the product, which is explained in the usage example document or the program script description. Functional requirements define the software functions that developers must implement so that users can complete their tasks, thereby satisfying business requirements. The so-called feature refers to a collection of logically related functional requirements to provide users with processing capabilities and meet business needs. Software requirements involve demand extraction, demand analysis, establishment of demand specifications and confirmation, and technical, economic, and time feasibility analysis of modeling and software development. Software requirements directly affect software design, software testing, software maintenance, software configuration management, software engineering management, software engineering process and software quality.

Software requirements: software requirements include three different levels: business requirements, user requirements and functional requirements. Business requirements reflect the high-level objective requirements of organizations or customers for systems and products, which are described in project view and scope documents. The user requirements document describes the tasks that users must complete when using the product, which is described in the use case document or scheme script description. Functional requirements define the software functions that developers must implement, so that users can complete their tasks, so as to meet the business requirements. The so-called features refer to the collection of logically related functional requirements to provide users with processing capacity and meet business requirements. Software requirements involve requirements extraction, requirements analysis, establishment of requirements specifications and confirmation, as well as technical, economic and time feasibility analysis of modeling and software development. Software requirements directly affect software design, software testing, software maintenance, software configuration management, software engineering management, software engineering process and software quality.

Software requirements: Software requirements include three different levels: business requirements, user requirements and functional requirements. Business requirements reflect the high-level target requirements of organizations or customers for systems and products, which are explained in the project views and scope documents. The user requirement document describes the tasks that users must complete when using the product, which is explained in the use case document or the description of the scheme script. Functional requirements define the software functions that developers must implement, so that users can complete their tasks, thus meeting the business requirements. The so-called feature refers to the collection of logically related functional requirements, which can provide users with processing power and meet business requirements. Software requirements involve requirements extraction, requirements analysis, specification and confirmation of requirements, and technical, economic and time feasibility analysis of modeling and software development. Software requirements directly affect software design, software testing, software maintenance, software configuration management, software engineering management, software engineering process and software quality.