6 Pg 305 2. What is a data flow diagram? Why do systems analysts use data flow diagrams? Answers: A picture of the movement of data between external entities and the processes and data stores within a system. Systems analysts use DFDs to help in the analysis phase by accomplishing the following three things: 1. Requirements Determination 2. Requirements Structuring 3. Alternative Generation and Selection 3. Explain the rules for drawing good data flow diagrams. Answers: Process: A. No process
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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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USE-CASE DIAGRAM EXERCISE 1. Draw a use case diagram for an ATM machine with the following functionality. A customer’s interaction with the system involves logging in‚ making withdrawal requests‚ deposit requests‚ and balance inquiry requests. If the customer logs in‚ there is a possibility (although rare) that the system will confiscate the card (for example‚ if the login is incorrect or if the bank determines that the customer’s balance is significantly under zero). Card confiscation involves
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mywbut.com Data Flow Diagrams (DFDs) 1 mywbut.com Specific Instructional Objectives At the end of this lesson the student will be able to: • • • Identify the activities carried out during the structured analysis phase. Explain what a DFD is. Explain why constructing DFDs are important in arriving at a good software design. • Explain what a data dictionary is. • Explain the importance of data dictionary. • Identify whether a DFD is balanced. Structured Analysis Structured analysis
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Assignment 3: Creating a Domain Model Class Diagram Eustace Langley Strayer University Dr. Richard Brown August 19‚ 2014 Creating a Domain Model Class Diagram Introduction Many current approaches to system development use the term class rather than data entry and use the concepts and notation based on UML to model things in the problem domain. On my day to day activities‚ I have the privilege to use more than one particular operating system to complete a number of tasks. A
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SCHEMATIC DIAGRAMS FLAT COLOUR TELEVISION 6 2005 YA270 AV-21MT15/P‚ AV-21MP15/T‚ AV-21MT35/P‚ AV-21VA15/P CD-ROM No.SML200507 BASIC CHASSIS CW2 COLOR EXIT CLOSED CAPTION 100+ VNR ECO CINEMA SURROUND BASS RM-C1287 COPYRIGHT © 2005 Victor Company of Japan‚ Limited No.YA270 2005/7 AV-21MT15/P‚ AV-21MP15/T‚ AV-21MT35/P‚ AV-21VA15/P STANDARD CIRCUIT DIAGRAM NOTE ON USING CIRCUIT DIAGRAMS 1.SAFETY The components identified by the symbol and shading are
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Assignment: Draw and explain a Use-Case diagram for a Library Management System. Introduction: Capturing the dynamic behaviour of a system is one the key aspects to create a model. Dynamic behaviour means the behaviour of the system under operation. Use case diagrams are used in Unified Modeling Language‚ a standard modelling language for the modeling of real-world objects and systems. A use case diagram is to explicitly define the working of a system with in a system boundary. Each system is primarily
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Company Background 1. History of the Company 2. Company Products / Service and Clients 3. Organizational Charts / Divisions and Departments 4. Locale of the Study (with Map) B. Overview of the Current System C. Context Diagram of the Current System D. Data Flow Diagram of the Current System E. User Overview of the Current System F. Analysis of the Current System G. Operational Definition of Terms CHAPTER 2 FEASIBILITY STUDY A. Organizational and Cultural Feasibility B. Technological
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Actus Reus and Mens Rea Actus reus and mens rea are two of the five elements of a crime that the prosecution may have to prove to get a conviction in a criminal case. Actus reus is the criminal act. Mens rea is the intent to commit the crime. In general‚ the more serious a crime is‚ the more important it is for the prosecution to prove that both a criminal act was committed and that there was criminal intent. These more serious crimes are also known as conduct crimes. Not surprisingly‚ conduct
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Venn diagram –Max-min 1. According to a survey‚ at least 70% of people like apples‚ at least 75% like bananas and at least 80% like cherries. What is the minimum percentage of people who like all three? Answer: Let’s first calculate the surplus: percentage of people who like apples + percentage of people who like bananas + percentage of people who like cherries = 70% + 75% + 80% = 225% = a surplus of 125%. Now this surplus can be accommodated by adding elements to either intersection of only
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