Nt1330 Unit 1 Data Flow Analysis

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MILESTONE 5 – PROCESS MODELING - Part II (Exploded DFD) _______________________________________________________ Part 1 Synopsis 1. Level 0 Data flow Diagram T he requirements analysis phase answers the question, ‘What does the user need and want from a new system?’ The requirements analysis phase is critical to the success of any new information system! In this milestone we need to identify what information systems requirements need to be defined from the system users’ perspectives. The Data Flow Diagram (DFD) is a graphical representation of system which shows systems structure and components. The DFD shows how the data transforms in the system, what the source of the input is and what is the…show more content…
Create a Level 0 (System) Data Flow Diagram 2. Create a Child Data Flow Diagram Prerequisites Before starting this milestone, the following topics should be covered: • Process Modeling - Chapter 9 Assignment As a systems analyst or knowledgeable end-user, you must learn how to draw data flow diagrams to model business process requirements. The preliminary investigation and problem analysis phases of the methodology have been completed and you understand the current system’s strengths, weaknesses, limitations, problems, opportunities, and constraints. You have already built the Context models (Milestone 3) to document business requirements for the new system. You now need to build the Level 0 (System) DFD and corresponding process models. Activities 1. Develop Level 0 DFD. Make assumptions where necessary. Explode 0.1 Update skills requirement, 0.2 Generate Reports, 0.4 Order Equipment, 0.6 Process Check-out 2. Draw one Child Diagram using the Level 0…show more content…
Continue decomposition of one process up to primitive processes (Level 2, Level 3, etc.) Deliverable format and software to be used are according to your instructor’s specifications. Deliverables should be neatly packaged in a binder, separated with a tab divider labeled “Milestone 5-Part II”. References • Context Data Flow Diagram Narrative – Exhibit 5.1 Deliverables: Level 0 Data flow Diagram Due:__/__/__ Time:______ Child level diagrams: Due: __/__/__ Time:_______ ADVANCED OPTIONS Advanced option is to develop Child diagrams for all processes in Level 0 DFD. Child level diagrams: Due:

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