RachelDouglas ISIT 470 WINTER hw05

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Spokane Falls Community College *

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470

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Industrial Engineering

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Apr 3, 2024

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pptx

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15

Uploaded by CoachProtonFish34

DATA AND PROCESS MODELING Homework 05 | ISIT 470 Systems Analysis & Design SFCC Winter 2024 | Sean Lickfold
WELCOME TO HOMEWORK 05! Before starting this Assignment, make sure to read all the required materials for this module, which can be found in the corresponding module Discussion. Chapter 5 is the second of four chapters in the systems analysis phase of the SDLC. This chapter discusses data and process modeling techniques that analysts use to show how the system transforms data into useful information. Data and process modeling involves three main items: data flow diagrams, a data dictionary, and process descriptions. The deliverable, or end product, of data and process modeling is a logical model that will support business operations and meet user needs.
GLOBE CONSULTING
QUESTIONS #1-4 You are a senior systems analyst at Globe Consulting, a growing IT consulting firm. You are leading the development team for a major client. You need to explain data and process modeling to your two newly hired junior analysts (Michelle and Aidan) before meeting with the client tomorrow afternoon.
QUESTION #1 Describe the rules for creating DFDs. Context diagram should be drawn so that it fits within a page. Information system name should be used as process name. In each symbol, unique names should be used. Cross lines should be avoided. This can be done by restricting the symbols in DFD. Every process should have reference number and unique name. Feedback and user input should be obtained as possible.
QUESTION #2 What are the data flow and process combinations that must be avoided when creating a DFD? An external entity should not be linked with another external entity. An external entity can’t be connected with a data store. A data store can’t be connected with another data store.
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