Question 1 Characteristics of bad systems To be useful‚ the information system must possess the characteristic of reliability‚ relevance‚ understandability‚ complete‚ accurate and comparability. However‚ in order for Encik Khalid to detect problems occur with the current or new system are based on the characteristics of bad system which are unreliable‚ irrelevance‚ not understandable‚ incomplete‚ inaccurate‚ and incomparable. The first characteristic is unreliable. Encik Khalid may detect the
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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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Service Request SR-rm-022 Part 3 BSA 375 February 04‚ 2013 After describing the information system architecture which includes data‚ processes‚ interfaces and network‚ in addition to the application architecture and process design‚ we can now move forward to the implementation and operation phase. There are seven major activities that take place in the implementation and operation phase. These phases must be managed effectively in order for the project to be successful. The seven phases
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2.3 Ishikawa diagram In 1960s‚ Professor Kaoru Ishikawa has introduced Ishikawa diagram. This diagram also called fishbone diagram or cause and effect diagram (Ishikawa 1976). Since this diagram is inception‚ it has gained tremendous of popularity to identify the root cause of the variety of problems (Hossen et al. 2017). Besides that‚ Ishikawa diagram often called as fishbone diagram is because it can help in the brainstorming to determine the possible cause of a problem and also sort the ideas
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A logical framework for the early girl child marriage elimination project. Narrative summary Objectively verifiable indicators Means of verification Assumptions. Goals( Development obj.) Overall number of school girls engaged in early and forced marriage in Mandera County to be eliminated. Number of school going girls forced to out of school for the purpose of marriage in Mandera County. Secondary data that becomes available over the course of the project including: i) Reports from schools
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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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Jarboe I February 8‚ 2011 Logical Fallacies Before we can understand what a logical fallacy is‚ we establish some common background information for the purposes of accurate communication. There are two types of reasoning‚ inductive and deductive. The primary difference between the two is that inductive reasoning automatically allows for an appeal to probability‚ the assumption that what could happen will happen‚ while deductive reasoning considers this a logical fallacy. Thus for the purposes
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Enterprise Architecture Tool Selection Guide Editorial Writer: J. Schekkerman Version 5.0 2009 Enterprise Architecture Tool Selection Guide Preface Preface An enterprise architecture (EA) establishes the organization-wide roadmap to achieve an organization‘s mission through optimal performance of its core business processes within an efficient information technology (IT) environment. Simply stated‚ enterprise architectures are ―blueprints‖ for systematically and completely defining
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Studying Architecture The first step in becoming an architect is earning a professional degree from a college or university that has an architecture program accredited by the National Architectural Accrediting Board (NAAB). An accredited‚ professional degree from one of these programs is the most accepted way (and sometimes the only way) to satisfy U.S. registration boards’ education requirements. The type of degree you earn may also have an impact on whether you can become licensed in multiple
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style and its formal properties.) Figure 1 illustrates this style. Common specializations of this style include pipelines‚ which restrict the topologies to linear sequences of filters; bounded pipes‚ which restrict the amount of data that can reside on a pipe; and typed pipes‚ which require that the data passed between two filters have a well-defined type. [pic] Figure 1: Pipes and Filters A degenerate case of a pipeline architecture occurs when each filter processes all of its
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