MIS 374 Rev 02 Process Modeling: Context Diagrams and Data Flow Diagrams (DFDs) Introduction Figuring out the business processes for complex systems can be complicated. For example‚ if the goal is to streamline an existing supply chain process‚ your investigation will cross multiple business units‚ perhaps starting with an on-line order‚ a retail store pick-up‚ or a telephone order. How does the current process work to replace items in inventory storage and on retail shelves? Computer systems
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EXISTING POINT OF SALES BLOCK DIAGRAM PACKAGING OF ITEMS GENERATING RECEIPT (MANUALLY) COMPUTING OF TOTAL PRICE SEARCHING OF ITEM ORDER OF ITEM CONTEXT DIAGRAM ORDER OF ITEM SEARCHING OF ITEM COMPUTING THE TOTAL PRICE GENERATING RECEIPT (MANUALLY) PACKAGING OF ITEMS CUSTOMER PHARMACIST FIRST LEVEL DATA FLOW DIAGRAM 1 PLACE AN ORDER 2 SEARCHING OF ITEM PHARMACIST PACKAGING OF ITEMS CUSTOMER ITEM NAME ORDERED
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6. Sends checks to cashier 7. Uses payments stub to enter payments into computer | Computer | 3 | 8. Update record payment on AR master data | AR Master Data | 3 | | b. Construct a context diagram based on the table you prepared in part (a). Webster‚ Inc. Context Diagram Customer Customer Monthly statements Monthly statements Webster‚ Inc. Order entry process Webster‚ Inc. Order entry process Payments Payments Cashier Cashier
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Gathering Techniques 3. Statistical Treatment of Data (optional) SYSTEM PRESENTATION A. Existing System 1. Company Background 2. Description of the System 3. Process Flow of the System 4. Analysis of the System B. Proposed System 1. Description of the System 2. Objectives of the System 3. Scope and Limitation of the System 4. Process Flow of the System 5. System Specifications a. Features of the System b. Hardware Requirement c. Software Requirement C. Cost-Benefit Analysis IMPLEMENTATION ISSUES SUMMARY
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SOFTWARE ENGINEERING ”Automated Lending System” Prepared by: Deladia‚ Irish D. Background ENTREPRENEUR ALUMNI DEVELOPMENT COOPERATIVE (EADCOOP) was organized on August 30‚ 1995 by 18 graduates and 2 Entrepreneurship teachers from Bicol University College of Arts and Letter. The cooperative was created to serve as mother unit and link for financial assistance of the members thru their share capital and inter-lending scheme from other sources. Through this cooperative
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Explain the functioning of the Circular Flow of Income. The Circular Flow of Income is a model that indicates how money moves throughout an economy. This model was mainly in use up to the Second World War and is a model developed by classical (monetarist) economists. Many models have been developed based on The Circular Flow of Income. The Circular Flow of Income consists of two parts‚ the inner circular flow and injections and withdrawals. In the inner circular flow there are two basic economic
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FLOW CHART A flowchart is a type of diagram that represents an algorithm or process‚ showing the steps as boxes of various kinds‚ and their order by connecting them with arrows. This diagrammatic representation illustrates a solution to a given problem. Process operations are represented in these boxes‚ and arrows; rather‚ they are implied by the sequencing of operations. Flowcharts are used in analyzing‚ designing‚ documenting or managing a process or program in various fields. Symbol | Name
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DATA FLOW DIAGRAM - one of the most commonly used modeling tool which graphically represents a system as a network of processes‚ linked together through input and output flow lines and entities. Data flow Components ▪ Process - transformation of data flow into outgoing data flow. It may represent . . - whole system - subsystem - activity ▪ Data store - repository of data in the system It may represent . . . - computer file or
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CIRCULAR FLOW OF INCOME The Circular Flow of Income‚ expenditure and output is a model of the economy which shows the movement of goods and services between households and firms and their corresponding payments in money terms Money circulates from households to firms and back again. The more a households spend and the more firms produce‚ the higher the levels of income. Income + output in economy should always be same and are measured by GDP. Circular Flow emphasizes importance of interactions
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Functional Decomposition Diagram An analyst first must understand an organization’s business functions before he or she can begin developing information systems. The functional decomposition diagram (FDD) is a business planning tool that depicts the hierarchy of business functions‚ processes‚ and subprocesses within an organization that are later described in detail using process models (chapter 6). The exercise of breaking down‚ or decomposing‚ the business functions into processes makes complex
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