PART 1 MODULE 3 VENN DIAGRAMS AND SURVEY PROBLEMS EXAMPLE 1.3.1 A survey of 64 informed voters revealed the following information: 45 believe that Elvis is still alive 49 believe that they have been abducted by space aliens 42 believe both of these things 1. How many believe neither of these things? 2. How many believe Elvis is still alive but don’t believe that they have been abducted by space aliens? SOLUTION TO EXAMPLE 1.3.1 When we first read the data in this example‚ it may seem as if the numbers
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Free Data Flow Diagrams Tutorial DFD Tutorial Data Flow Diagrams - Introduction Data flow diagrams can be used to provide a clear representation of any business function. The technique starts with an overall picture of the business and continues by analyzing each of the functional areas of interest. This analysis can be carried out to precisely the level of detail required. The technique exploits a method called top-down expansion to conduct the analysis in a targeted way. [pic] The
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PRACTICE PROBLEM SET B Process Flow Diagrams 1. Consider the Custom Molds‚ Inc. case on pages 125-127 of the text. Prepare a process flow diagram of the Mold Fabrication process and the Parts Manufacturing process‚ showing how they are linked. We will discuss this flowchart in class on March 29. 2. Founded in 1966‚ DAV is one of the world’s largest insurance companies with locations in 32 countries. Given the description below‚ flowchart the New Policy Set-up process as it existed
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UML Class Diagram and Packages * Agenda * What is a Class Diagram? * Essential Elements of a UML Class Diagram * Packages and Class Diagrams * Analysis Classes Approach * Tips What is a Class Diagram? * A class diagram describes the types of objects in the system and the various kinds of static relationships that exist among them. * A graphical representation of a static view on declarative static elements. * A central modeling technique that runs through
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review the Cause and Effect Diagram‚ better known as the Fishbone Chart‚ why and when you would use this method‚ and examples of real experiences with this diagram. Fishbone Chart A Japanese quality control statistician‚ Dr. Kaoru Ishikawa‚ invented the fishbone diagram. It may be referred to as the cause and effect‚ fishbone‚ or Ishikawa diagram. It is an analysis tool that provides a way to look at effects and causes that contribute to those effects. This diagram has been used in Japan‚ to
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DFD Yourdon Recently reviewed In the late 1970s data-flow diagrams (DFDs) were introduced and popularized for structured analysis and design (Gane and Sarson 1979). DFDs show the flow of data from external entities into the system‚ showed how the data moved from one process to another‚ as well as its logical storage. Figure 1 presents an example of a DFD using the Gane and Sarson notation. There are only four symbols: Squares representing external entities‚ which are sources or destinations
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Entity-Relationship Diagrams (ERD) Data models are tools used in analysis to describe the data requirements and assumptions in the system from a top-down perspective. They also set the stage for the design of databases later on in the SDLC. There are three basic elements in ER models: Entities are the "things" about which we seek information. Attributes are the data we collect about the entities. Relationships provide the structure needed to draw information from multiple entities. Generally
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Venn Diagram Paper Tariek McLeish MTH/156 University of Phoenix Jennifer Durost December 21‚ 2014 The Venn Diagrams was invented by Jon Venn as a way of visualizing the relationship between different groups (Purplemath‚ 2014). Venn Diagrams are an important learning tactic that helps students to learn how to graphically establish and compare concepts. They are often used in English lessons‚ and its effect is often undermined in the mathematics classroom. They are extremely valuable
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Using Data Flow Diagrams Data flow diagram is used by system analyst to put together a graphical representation of data processes throughout the organization. It depicts the broadest possible overview of system inputs‚ processes‚ and outputs. A series of layered data flow diagrams may be used to represent and analyze detailed procedures in the larger system. By using combinations of only four symbols‚ the system analyst can create a pictorial depiction of processes that will eventually provide
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DATA FLOW DIAGRAM Group#7 Nugao Oserin Obongen The Data Flow Diagram (DFD) • a graphical representation of the flow of data through an information system. It enables you to represent the processes in your information system from the viewpoint of data. The DFD lets you visualize how the system operates‚ what the system accomplishes and how it will be implemented‚ when it is refined with further specification. • Data flow diagrams are used by systems analysts to design information-processing systems
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