1.DFD定义 2.Flow chart定义 3.DFD和Flow chart的区别 1.DFD 1.1DFD 定义 DFD, Data Flow Diagram. 它表示系统如何处理数据并描述数据的来源、去向以及数据的存储方式 如图: 1.2 DFD的组成 Process– Transforms incoming data flow into the outgoing data flow 输入数据流转化为输出数据流 Data Store– Represe...
数据流程图(Data Flow Diagram,DFD/Data Flow Chart)是描述系统数据流程的工具。它将数据独立抽象出来,通过图形方式描述信息的来龙去脉和实际流程。在数据流程图中用___表示处理过程。 A. 长方形 B. 带圆角的长方形 C. 正方形 D. 圆或椭圆 相关知识点: 试题来源: 解析 B 正确答案:B 解析:数据流程图是...
数据流图(Data Flow Diagram,简称DFD)是一种图形化技术,用于表示系统中数据的流动、处理和存储。它由节点、箭头和数据流组成,能够清晰地展示系统的逻辑结构和功能。在数据流图中,节点代表系统中的各种组件,如数据库、应用程序、用户等;箭头表示数据在组件之间的流动
Data Flow Diagram data-flow-chart data_flow manage_data data_flow 数据流是信息从一个或多个源点经过一系列操作,最终流向一个或多个目标的过程。这个过程可以包括数据的收集、处理、存储和分析等步骤。在计算机科学中,数据流是一种抽象模型,用于描述和管理数据的移动和转换。数据流可以是单向的,也可以是...
• The timing and sequence of the process is aptly shown by a flow chart where as the processing of data is taking place in a particular order or several processes are taking simultaneously is not described by a data flow diagram.
Data Flow Diagram Level 2 DFD Level 2 or higher go into deeper details showing how the data flows inside the main process of the system. We should go as many levels of Data Flow Diagram as needed until we reach the desired level of detail. Shapes | TemplatesWe...
数据流图与数据流程图(Data flow diagram and data flow chart) Data flow diagram: referred to as DFD, is using a graphical way to express the logical flow and logic transformation process in the system's internal logic function and data of the system, is the main tool of expression system an...
This template shows the Context Diagram. It was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the Block Diagrams Solution from the “Diagrams” area of ConceptDraw Solution Park. The context diagram graphically ident
ConceptDraw PRO diagramming and vector drawing software as a sequence diagram tool provides the Rapid UML Solution from the Software Development Area that contains the UML Sequence library. Business process Flow Chart — Event-Driven Process chain (EPC) diagrams ...
18 数据流程图(Data Flow Diagram, DFD/Data Flow Chart)是描述系统数据流程的工具。它将数据独立抽象出来,通过图形方式描述信息的来龙去脉和实际流程。在数据流程图中用( )表示处理过程。A.长方形 B.带圆角的长方形 C.正方形 D.圆或椭圆 【本试题属于优质解答,查看答案有本题目的解答分析】...