OPS 571 WEEK THREE ASSIGNMENT

OPS 571 Week Three Assignment



OPS 571 Week Three Assignment

Introduction

The DFD technique is based on the principle of decomposition of the functionality of a system in successive refinement levels (top-down approach) aimed at allowing a reading of the specification of the system from the abstract to detail, allowing you to see the system globally (higher levels), or in detail (lower levels). DFD is organized so overall the series of levels so that each successively provide more details about a portion of the previous level (Ralph & Reynolds, 2009). This is part of a general Context which ...