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软件工程复习资料（Review data for software engineering）.doc

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软件工程复习资料（Review data for software engineering）

软件工程复习资料（Review data for software engineering） The third chapter is structured design 1. software design phase of the main tasks, methods, stages: The demand analysis phase of the main tasks is to determine the system must be what to do, the formation of the software requirements specification, the main task of the software design phase is to determine the system of how to do, starting from the software requirements specification, detailed design form of software, software design using a variety of methods, such as structured design method, oriented the data structure of the object oriented design method, design method, structured software design can be divided into the overall design and detailed design of two stages. 2. main tasks and contents of the overall design phase: The main task of the overall design stage is the systems functional requirements allocated to the software structure, the formation of the software module structure diagram (MSD), the structure diagram of rectangular said functional units, called modules, connecting segment of the lower module that call relationship between them, in the overall design stage, each module is still in black box, module through the external features of logo, name, input and output. 3., the overall design of the presentation and its content (hierarchy, HIPO diagram, structure diagram): Hierarchical graph is the overall design phase of the software most commonly used representation of hierarchical structure is used to describe software, each block in the graph represents a module, block the connection between said module, it is suitable for the process of hierarchical graph in a top-down design software in use; Figure HIPO was invented by IBM company of the United States hierarchical graph + input / processing / output map English acronym, HIPO diagram and IPO diagram of H is actually composed of two parts, H diagram is the hierarchical graph mentioned above, in order to make the HIPO graph with traceability, in H in a