This document provides answers to three questions related to project feasibility analysis and data flow diagrams. For the first question, it discusses the four main types of feasibility studies - technical, operational, economic, and schedule feasibility. It provides examples of questions to address for each type of feasibility study when evaluating a new inventory system project. For the second question, it outlines characteristics of a quality information system such as being better than the existing system, effective, user-friendly, and ensuring accurate data. For the third question, it describes the rules for creating different symbols used in data flow diagrams including processes, data stores, external entities, and data flows.