System Analysis and Design/ Tools for systems analysts Learning Objectives Learning Objectives What are Data Flow Diagrams (DFDs)? Why they are useful? How are they developed? How to level DFDs? Good style conventions in developing DFDs Difference between Logical and Physical DFDs Tools available to draw DFDs V. Rajaraman/IISc. Bangalore //V1/June 04/1 System Analysis and Design/ Tools for systems analysts Motivation Motivation WHY DFD ? Provides an overview of
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4.3 DATA FLOW DIAGRAM A data flow diagram is a graphical technique that depicts information flow and transforms that are applied as data move from input to output. The DFD is also known as Data Flow Graph or Bubble Chart. The DFD is used to represent increasing information flow and functional details. Also DFD can be stated as the starting point of the design phase that functionally decomposes the requirements specifications down to the lowest level of detail. A Level 0 also called a fundamental
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Level (0) Data Flow Diagram [pic] Level (1) Data Flow Diagram of General Enquiry [pic] Level 1DFD of Passenger Enquiry Section [pic] Level 2 DFD of Booking [pic] Level 2 DFD Cancellation ----------------------- Passenger 1.0 General Enquiry 2.0 Passenger Enquiry 3.0 Booking Counter 4.0 Cancellation Information Booking Inquiry
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The procedure for producing a data flow diagram • Identify and list external entities providing inputs/receiving outputs from system; • Identify and list inputs from/outputs to external entities; • Draw a context DFD Defines the scope and boundary for the system and project 1. Think of the system as a container (black box) 2. Ignore the inner workings of the container 3. Ask end-users for the events the system must respond to 4. For each event
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6 represents the class diagram of the project. Various classes are User‚ Event‚ Administrator‚ Animal‚ Disease‚ etc. The user can be a guest user‚ registered user‚ a member user or an administrator. The Animal class is associated with the Disease class. Fig 5.6: Class Diagram Usecase Diagram: The Figure 5.7 represents the usecase diagram of the project. All the functionalities of the user as well as the administrator is shown. Fig 5.7: Usecase Diagram Activity Diagram: The Figure 5.8 represents
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FEATURE-BASED TEXTURE SYNTHESIS AND EDITING USING VORONOI DIAGRAMS Muath Sabha Department of Multimedia Technology Arab American University-Jenin‚ Palestine email: msabha@aauj.edu Philip Dutr´ e Department of Computer Science Katholieke Universiteit Leuven‚ Belgium email: philip.dutre@cs.kuleuven.be erating a similar distribution in the target texture and that is explained in the subsections 3.1 and 3.2. (2) The second and major component‚ which we consider the main contribution in our work‚ is
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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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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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COIT20247: Database Design and Development Term1‚ 2015 Assessment 1 - Systems Development Lecturer: Umapathy Venugopal Tutor: Umapathy Venugopal Prepared by: William Rogers S0267955 Table of Contents Business Rules 4 List of assumptions 4 Entity and Attribute Definitions: 5 Reference List 7 Business Rules All staff must record their full name‚ address‚ and phone numbers as well as be given a unique employee ID. Analysts are required to give their expertise while managers
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THESIS FORMAT (FOR BSIT) I. INTRODUCTION 1. Context of the Study 2. Statement of the Problem a. General Statement b. Specific Statement 3. Objective of the Study a. General Objective b. Specific Objective 4. Scope and Limitation of the Study 5. Significance of the Study 6. Motivation REVIEW OF RELATED LITERATURE AND STUDIES 1. Review of Related Literature 2. Review of Related Studies 3. Conceptual Framework 4. Operational Definition of Terms METHODOLOGY 1. Methods of Research 2. Data Gathering Techniques
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