12/8/2012 Major Topics Chapter 9 Using Data Flow Diagrams Data flow diagram symbols Data flow diagram levels Creating data flow diagrams Physical and logical data flow diagrams Partitioning Event driven modeling Use case and data flow diagrams Systems Analysis and Design Kendall and Kendall Fifth Edition Kendall & Kendall Using Data Flow Diagrams Unexploded data flow diagrams are useful to identify information requirements Exploded data flow diagrams can be used for presentation
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Assignment 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
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DATA RETRIEVAL CHART Importance / Economic Values | Problems / Challenges | Effect to the Economy | Government Programs | 1. Water resources provide us aquatic creatures like fish that serves as our food which is a basic need. | Some fisherman use dangerous fishing methods like muro-ami and dynamite fishing. | Red tide decreases the quality of the fish that we catch. | R.A. 1751 – Anti illegal fishing. | 2. Fishing makes a general improvement in living standards because of the profits
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Employee Services Form Employee Information should be filled out completely to avoid delay in the processing of the form. Use the tab or arrow keys to navigate through the form and Alt-Arrow up/down to activate the available drop down menus. Press F1 for help in each field. All comments should be entered at the bottom of the form. Employee Information Type of Request New employee Add / Change Services (existing employee) Employee Termination Name (Last‚ First & Middle
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INTRODUCTION Information Technology is the study‚ design‚ development‚ implementation and support management of information system. It helps to produce‚ manipulate‚ store‚ communicate and/ or disseminate information. We used the term information technology or IT to refer to an entire industry. In actuality‚ information technology is the use of computers and software to manage information. In some companies‚ this is referred to as Management Information Services (or MIS) or simply as Information
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BSBINN601 TASK 1 1. Create a flow chart by using the headings to demonstrate the change management cycle. Flow Chart 4. What is the purpose of reviewing existing policies and practices against the strategic objectives? The monitoring and reviewing of all the procedures and policies regularly is very essential. The management team of the organization must take the responsibilities of recognizing and identifying the changes that are required to be done in the policies in order to increase
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Using Data Flow Diagrams Data flow diagram is used by system analyst to put together a graphical representation of data processes throughout the organization. It depicts the broadest possible overview of system inputs‚ processes‚ and outputs. A series of layered data flow diagrams may be used to represent and analyze detailed procedures in the larger system. By using combinations of only four symbols‚ the system analyst can create a pictorial depiction of processes that will eventually provide
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Narrative Flow of the Current System a. Flow of Data Figure 1 shows the data flow diagram of the current system where do the Research data on Research Development and Extension come from. First‚ the data will come from the Researcher then they will give it to their adviser‚ next to the Department Coordinator‚ Research Chairman‚ Campus Dean‚ Campus Administrator then it will be sent to Research Development and Extension Office on Capiz State University Main Campus. 1.0 Adviser 2.0 Department
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Figure 1.0: Entity Relationship Diagram of Generic Academic Performance Monitoring System Figure 2.0: Context Diagram of Generic Academic Performance Monitoring System The figure 2.0 represents the two (2) users of the Generic Academic Performance Monitoring System namely the Administrator and the Professor. The Administrator entity shows the capability to access the system; manage account by modifying account’s profile; managing member’s account such as creating new user profile and updating
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DATA FLOW DIAGRAM Group#7 Nugao Oserin Obongen The Data Flow Diagram (DFD) • a graphical representation of the flow of data through an information system. It enables you to represent the processes in your information system from the viewpoint of data. The DFD lets you visualize how the system operates‚ what the system accomplishes and how it will be implemented‚ when it is refined with further specification. • Data flow diagrams are used by systems analysts to design information-processing systems
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