External entities are objects outside the system‚ with which the system communicates. External entities are sources and destinations of the system’s inputs and outputs. 1.b) ENTITY RELATIONSHIP DIAGRAM Entity–relationship model (ER model) in software engineering is an abstract way to describe a database. This article refers to the techniques proposed in Peter Chen’s 1976 paper.An ER model is an abstract way to describe a database. There are three basic elements in ER models: Entities are
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Ermack B. Verzel June 26‚ 2013 Assignment Software Engineering 1. As software becomes more pervasive‚ risks to the public (due to faulty programs) become an increasingly important concern. Develop a realistic doomsday scenario where a failure of a computer program could do great harm (endanger human life or economies). Tech doomsday scenario: The Net goes down News flash: The Internet melted down today as millions of Web surfers found themselves redirected to the wrong sites
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Application Software John Hassler Professor C. Mason Computer Information systems 204 September 13‚ 1996 Computer systems contain both hard and software. Hardware is any tangible item in a computer system‚ like the system unit‚ keyboard‚ or printer. Software‚ or a computer program‚ is the set of instruction that direct the computer to perform a task. Software falls into one of two categories: system software and application software. System software controls the operation of the computer hardware;
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SOFTWARE TESTING SOFTWARE TESTING Testing is the process of executing a program with the intent of finding errors. TESTING PRINCIPLES All tests should be traceable to customer requirements. Tests should be planned long before testing begins. The Pareto principle applies to software testing. Stated simply‚ the Pareto principle implies that 80 percent of all errors uncovered during testing will likely be traceable to 20 percent of all program components. TESTING PRINCIPLES Testing should begin
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Date The Economic Recession of 2007 to 2009 Recessions are a normal part of the business cycle‚ which constitutes of recurring expansion and contraction of the overall economic cycle associated with changes in employment‚ income‚ prices‚ sales and profits. A business cycle consists of four phases‚ which include peak‚ recession‚ trough‚ and expansion. Once an economy reaches the peak‚ which is the maximum point of economic growth‚ it contracts and initiates a period of recession. Some of the notable
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TORA Temporary-Ordered Routing Algorithm (TORA) – An Operations Research Software TORA is an algorithm i.e. a mathematical set of instructions or programs (mathematical-software). It is an optimization system in the area of operations research which is very easy to use. Further‚ TORA is menu-driven and Windows-based which makes it very user friendly. The software can be executed in automated or tutorial mode. The automated mode reports the final solution of the problem‚ usually in the standard
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Developing Recession with Rising Unemployment The economy as we know it today is developing a recession with rising unemployment. The US economy has experienced a decrease in real output for one quarter and leading indicators point to continued contraction in the current quarter. The unemployment rate last month was 5.8% and is expected to rise above 6% in the current quarter. With strict discipline‚ we can utilize fiscal or monetary policy tools in order to bring this nation back to an equilibrium
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The role of banks in economic recessions 05.05.2009 In today’s wavering global economic context‚ the word `crisis` is omnipresent‚ taking the media by assault and infringing into the population’s daily life‚ although many countries haven’t even officially entered recession yet. Although recession is generally referred to as a negative Gross Domestic Product growth for a period of at least two consecutive quarters‚ other important economic
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the company name] | FORWARD SOFTWARE | Settlement or Else? | | | INTRODUCTION Forward Software‚ Inc. is a software company potentially facing a copyright infringement lawsuit. The spreadsheet product Forward sells includes an optional menu navigation system identical to that of Focus Software‚ the original developer of the menu system. Forward’s spreadsheet product currently dominates the market. Focus Software is currently suing a smaller software company that has also used this
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PHASE 4: REQUIREMENTS ANALYSIS PHASE The Requirements Analysis Phase begins when the previous phase objectives have been achieved. Documentation related to user requirements from the Concept Development Phase and the Planning Phase shall be used as the basis for further user needs analysis and the development of detailed requirements. Multiple-release projects require only one iteration of the Requirements Analysis Phase‚ which should involve requirements definition for all planned releases. 1.0
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