Software requirements Ten steps to reading notes 2

Read the second part of ten steps of software requirements today. Read the knowledge and method of the article. The construction method of knowledge system in knowledge article knowledge is composed of knowledge and knowledge. Knowledge is the knowledge of knowledge as the core of the requirements of the construction of demand engineering knowledge system is composed of basic knowledge system, special knowledge system, unique knowledge system, three parts of the basic knowledge of requirements engineering logic, deduction, inference, hypothesis, argumentation and other methods to solve the software needs "incomplete, inaccurate, The problem of total change and inconsistency has the know-how to help demand engineering. The specific knowledge of requirements engineering includes software engineering, software architecture and information resource planning requirements Engineering unique knowledge requirements planning is a new generation of software requirements engineering differs from the traditional requirements engineering, demand planning is to "business global, System Global, information global " height to do the demand analysis work. The mission of the method of demand engineering is to show the structure and law of the problem. Analysis and calculation method is one of the essential differences between demand planning method and traditional demand analysis method. The analysis and calculation includes the calculation of system support capacity and business development capability. Structured Analysis Method (aka SA) method is the method used in the book's Business Modeling, System modeling and system modeling in demand planning. Object-oriented analysis method in the requirements analysis of the book using object-oriented analysis method as a use case analysis and functional requirements analysis method. Demand Unified Mode method demand Unified mode method and the idea of software design mode is the same, it is also a model to classify the requirements of most software systems as a description. Requirements management tools enable the document to be consistent with reality, track the status of each requirement, establish a chain of relationships with software development activities, and more. Formal requirement Specification for formal description of requirements (formal specification) means that the requirement model of the system is constructed with strict mathematical knowledge and symbols, which makes the demand model more rigorous, non-ambiguity and easy to infer. Demand analysis method for problem domain The demand analysis method oriented to problem domain (PD) is a new requirement analysis method. Compared with the method of structured requirement analysis and object-oriented requirement analysis, the style of demand modeling is obviously different.

In the demand engineering development chapter. The thinking and process requirement planning of demand planning is oriented to "whole business, whole information, whole system ", using the logical method of analysis synthesis and inductive deduction to organize the business logic model of organization and object, and to plan the system based on the logic model of the business. Business Research Business Research is to use scientific research methods to restore a complete, accurate and logical business appearance through data research and field research. Application Modeling application modeling includes business modeling, System modeling, and system modeling. System planning system planning is based on the organizational structure of business research, business matters, the size of business data and user expectations of business objectives, and combined with the results of application modeling to support this scale and application of information systems to form the content of a plan. The analytical calculation includes the calculation of the system support capacity and the ability of business development. Report preparation Requirements Planning report is not only the basis of the need development work, will also be the guidance document of software development work, or the foundation of the next information construction. Planning Review Planning Review is a task to check the requirement planning report, and it is an inspection of the completeness, accuracy, rationality and regularity of the work results in the demand planning stage .

Software requirements Ten steps to reading notes 2