You own a software development company that has been hired to build an online classified ads website (refer to Craigslist.com as an example). Data and Process ModelingUsing a free design tool, create a Context Diagram for the e-commerce system based on the requirements you identified. Remember to consider the internal and external actors (people and other systems) that our system might interact with. Think about the types of data that are going to flow in and out of the system. This might be a good opportunity to revise your requirements if necessary. Now create a Diagram 0 DFD for this system. Make sure you “zoom in” from the context diagram and include all the major internal systems, process, data flows, and data stores.Now create one Lower-Level DFDs (based on processes you identified in your Diagram 0). Pay special attention to the leveling & balancing techniques outlined in the textbook. These “exploded” process diagrams usually correspond to the process requirements you identified.

Software development is a group of activities in the computer science field that are solely…

Answered: You own a software development company…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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You own a software development company that has been hired to build an online classified ads website (refer to Craigslist.com as an example).

Data and Process Modeling

Using a free design tool, create a Context Diagram for the e-commerce system based on the requirements you identified. Remember to consider the internal and external actors (people and other systems) that our system might interact with. Think about the types of data that are going to flow in and out of the system. This might be a good opportunity to revise your requirements if necessary.

Now create a Diagram 0 DFD for this system. Make sure you “zoom in” from the context diagram and include all the major internal systems, process, data flows, and data stores.
Now create one Lower-Level DFDs (based on processes you identified in your Diagram 0). Pay special attention to the leveling & balancing techniques outlined in the textbook. These “exploded” process diagrams usually correspond to the process requirements you identified.

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