发生的方式之一是将数据流图和用例图混淆在一起。
One way this occurs is by confusing data flow diagrams with use case diagrams.
绘出数据流图，明白地知道数据如何被使用、被哪些人使用，以便你能评估所面临的风险，并决定如何处理它们？
Diagram the flow of data to be aware how data is consumed and by who, so that you can evaluate the risks involved and determine how to deal with them.
论文给出了系统的数据流图、系统结构及交互技术库的函数。
Data flow diagrams, system structure charts and library functions of interactive technique are described.
提出了一个基于实例的软件数据流图模块划分的方法和实现过程。
The paper presents a method and implementation of a case-based module division to software data flow diagram.
然后介绍了办公信息系统的总体模块、数据流图及数据库概念模式。
The general module of the office information system, the data flow diagram and the database concept mode are also introduced.
在可重构硬件资源约束条件下，将任务的数据流图划分成数个子模块。
The task data flow graph(DFG) was partitioned into several sub-modules under hardware resource constraint.
强时间约束是指控制数据流图CDFG的延迟时间无法满足的时间约束。
The strong time constraints are the time constraints when the delay time of Control Data Flow Graph (CDFG)is not satisfied.
首先对开发系统进行了需求分析，得到了功能需求，数据流图和数据字典。
Firstly, the author worked on the requirement Analysis, and got the functional requirement, data flow diagrams and data dictionary.
对药物专利数据库进行了需求分析和讨论，提出了基于数据流图的概要设计。
Requirements of pharmacy patent database are analyzed and discussed, and an outline design in data flow is presented.
控制数据流图可用于系统建模、软硬件功能划分、系统综合与验证等多个环节。
CDFG (control data flow graph) can be used in system modeling, software and hardware partition, synthesis and verification.
本文在对业务需求、功能需求、数据需求和性能需求进行分析的基础上给出了系统的数据流图。
Based on the analysis of business needs, functional requirements, data demands and performance requirements this paper presents data flow diagram of the system.
传统的系统需求分析方法有数据流图法等，但对于基于工作流的系统如办公自动化系统并不适合。
Traditional system demand analyzing methods, which include the data flow diagram and others, aren't suitable to the system based on the workflow such as OA system.
创建数据流图表以及结构化分析图、信息流图表、面向进程的图表、面向数据的图表和数据流程图。
Create structured analysis, information flow, process-oriented, data-oriented, and data process diagrams as well as data flowcharts.
最后，在行为级，本文提出了一种基于最小能量的算子调度算法，对折叠循环结构的控制数据流图进行算子调度。
At last, at the behavioral level, this dissertation proposes a minimal-energy based operator scheduling approach to perform operator scheduling for loop folding CDFG structure.
为了解决服务合成中的服务描述这一关键问题，提出了一种基于输入输出接口模型和数据流图模型的服务描述方法。
In order to resolve the service description problem of service composition, a service description method including mainly a (input-output) interface model and a data flow diagram model is put forward.
本文介绍了CP 2102主要特性、工作原理及其在智能电动机保护器中的应用，给出了部分原理图和数据流图。
The article introduces the main characters, working principles, the application of CP2102 in Motor Protector; provides some schematic diagrams and data flow charts.
本文提出了对软件工程中的图形文档进行布局处理的设计思想和布局规则，并且对数据流图和结构图这两类常用图形文档的布局给出了算法概述。
Design ideas and rules of graphic documents about layout processing in software engineering are described. An algorithm outline of ordinary DFD and sc layout is given.
在对文档进行分类的基础上，定义了一种双角色的基于角色的访问控制模型，并给出了此模型的数据流图及部分以XACML形式表示的控制策略。
Based on the classifying of the protected documents, a DR-RBAC model is defined, and its data-flow diagram and two examples of PolicySets expressed by XACML are given out.
考虑到算法映射问题的NP复杂度和求解时间的指数性增加，本文主要研究两步规划方法，即先进行数据流图的最优规划，然后进行处理器的映射。
Because of the NP complexity of mapping problem, the thesis studies two-step method: optimal scheduling of data flow graph and optimal processor mapping.
需求分析工具用于软件工程的需求分析阶段，它的基本功能是辅助系统分析人员对开发的系统需求进行分析，最终得到由数据流图和数据字典组成的完整而准确的软件需求规约。
Its basic function is to assist system analyst to analyze the requirement of the developed system, and to get an intact and accurate software requirement specification which is made up of Data Fl.
用户必须通过对象和数据流关系图才能了解实现细节，以便部署服务(Shi, 2004)。
Users have to follow the object and data flow diagrams to learn the implementation details so as to deploy the services (Shi, 2004).
图23显示为连接设置断点时数据流的样子。
Figure 23 shows how the data flow looks when breakpoints are set for connection.
图25中的模式显示了使用数据流表示事件的方法。
The pattern in Figure 25 illustrates the approach of using data flow to represent events.
这些输入和输出可以是纯控制流链接(类似于上一部分中的模型)，也可以是类似于图5所示的数据流链接。
The inputs and outputs can be pure control-flow links as in the models in the previous section, or can be data flow links as shown in Figure 5.
本节的其余部分再一次以数据流的观点向您介绍访问路径图以便您可以在查询执行的性能方面获得充分的理解。
The rest of this section takes you through the access path graph one more time from the data flow perspective so that you can gain a full understanding of the performance aspect of query execution.
图4描述创建XForms应用程序所用的数据流，这个过程将NIEM约束文档直接转换为X Forms文档。
Figure 4 describes the data flow used to create an XForms application by transforming the NIEM constraint document directly into the XForms document.
提出使用网表示可分配寄存器对象，通过对网的活跃性数据流分析，构造网的冲突图。
This paper presents Web as the object to be assigned to registers, constructs the interference graph of Webs by data flow analysis of Web liveness.
有关此节中所用元素的更多信息，请参见“绘制活动图指南”主题的“绘制数据流”部分。
For more information about the elements used in this section, see the Drawing Data Flows section of the topic Guidelines for Drawing an Activity Diagram.
图10显示的数据流与之相同，但该数据流是沿着可选分支而不是并行分支流动的。
Figure 10 shows the same data flow, but now flowing along alternative branches instead of parallel ones.
通过创建数据流关系图和描述，您可以看到业务流的优缺点。
By creating diagrams and descriptions of the data flow, you can see the business flow's weaknesses and strengths.
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