Nhu cầu phân tích Một nhu cầu phân tích cẩn thận là rất quan trọng để thực hiện GIS thành công và nên được nhiệm vụ đầu tiên của bất kỳ dự án GIS. Nhu cầu phân tích đòi hỏi một phân tích triệt để các nguồn dữ liệu hiện có. HỌC Mục tiêu Mục tiêu học tập của chương này là để hiểu được giá trị và phương pháp luận của phân tích nhu cầu cho các dự án ứng dụng GIS. CHÍNH CHỦ ĐỀ • Định nghĩa của nhu cầu phân tích • Nhu cầu các bước phân tích • Nhu cầu. | CHAPTER 2 Needs Analysis A careful needs analysis is critical to successful GIS implementation and should be the first task of any GIS project. Needs analysis requires a thorough analysis of existing data sources. Copyright 2005 by Taylor Francis LEARNING OBJECTIVE The learning objective of this chapter is to understand the value and methodology of needs analysis for GIS application projects. MAJOR TOPICS Definition of needs analysis Needs analysis steps Needs analysis case studies LIST OF CHAPTER ACRONYMS COTS Commercial Off-the-Shelf DBMS Database Management System GUI Graphical User Interface IT Information Technology RDBMS Relational Database Management System OCEAN COUNTY S STRATEGIC PLAN Ocean County Utilities Authority located in central New Jersey serves 36 municipalities through three wastewater treatment plants with a combined capacity of 80 MGD. The sewage collection system consists of 200 mi of sewer lines and 40 pumping stations. The Authority developed a GIS program as an integral part of its information technology IT strategy. Instead of treating the GIS as a standalone system the Authority envisioned using it as integrated part of its other enterprise systems such as the SAP Maintenance Management System. Authority s IT-based approach included the following steps Stupar et al. 2002 Needs analysis This step identified goals of the GIS as they related to the Authority s business needs. Spatial database design The objective of this step was to treat GIS data as an enterprise asset. ESRI s geodatabase data model was used to design the database. Data conversion This step involved collecting the needed data and converting it to a geodatabase. Application development This step designed and implemented applications for the GIS. INTRODUCTION Needs analysis or needs assessment identifies and quantifies the GIS needs of an organization and its stakeholders. Performing a needs analysis is the crucial first step to a successful GIS project. Needs analysis is .
