Edit our creative Data Flow Diagram PowerPoint Template to present the data flow in the business information system visually. Data flow diagrams are different from flow charts because the flow charts display the sequence of sets or events. In contrast, the data flow diagram represents the flow of...
数据流图描述数据流动存储处理的逻辑关系也称为逻辑数据流图Logical Data Flow Diagram实用PPT课件PPT课件上传人:s*** IP属地:上海 上传时间:2021-11-13 格式:PPTX 页数:14 大小:401.30KB 积分:20 举报 版权申诉 已阅读5页,还剩9页未读, 继续免费阅读 版权说明:本文档由用户提供并上传,收益归属内容...
Diagram 1 1.3 stock quotes stock quotes useri d and password useri d and password The stock quotes are getting updated after getting a live feed from the database, which are further getting the information from some other web site. The connection to ...
文档标题《Process Models Data Flow Diagrams[流程模型数据流图]》,总页数为31页,主要介绍了与Process Models Data Flow Diagrams[流程模型数据流图]相关的资料,希望对大家有用,欢迎大家浏览! 文档格式: .ppt 文档大小: 194.5K 文档页数: 31页 顶/踩数: ...
Context Diagram One process, numbered 0. Top-level view of IS A data flow diagram (DFD) of the scope of an organizational system that shows the system boundaries, external entities that interact with the system and the major information flows between the entities and the system One process, ...
数据流图(DFD DATA FLOW DIAGRAM)数据流图（DFDDATAFLOWDIAGRAM）结构化分析方法 描述数据处理过程的工具。数据流图从数据传递和加工的角度，以图形的方式刻画数据流从输入到输出的移动变换过程 加工数据在次进行变换产生输出数据其中注明加工名字（动词）数据输入的源点或输出的汇点。数据流被加工数据流向数据...
ppt for address book including data flow diagramdiagram ppt
数据流图描述数据流动、存储、处理的逻辑关系,也称为逻辑数据流图(Logical Data Flow Diagram)1概念 概念 数据流图描述数据流动、存储、处理的逻辑关系，也称为逻辑数据流图(LogicalDataFlowDiagram)，一般用DFD表示。2基本成分 数据流图用到四个基本符号，即外部实体、处理、数据流和数据存储。1.外部实体...
C) Data Flow Diagram Rules 1. Any data flow leaving a process must be based on data that are input to the process. 2. All data flows are named and the name reflects the data flowing between processes, data stores, sources, or sinks. ...
数据流图描述数据流动、存储、处理的逻辑关系,也称为逻辑数据流图(Logical Data Flow Diagram)1概念 概念 数据流图描述数据流动、存储、处理的逻辑关系，也称为逻辑数据流图(LogicalDataFlowDiagram)，一般用DFD表示。2基本成分 数据流图用到四个基本符号，即外部实体、处理、数据流和数据存储。1.外部实体...