Decision Analysis Applied Research In The Data Warehouse

With the development of information technology, each department of enterprises has generally implemented the management information system, which has improved the operation efficiency of enterprises and strengthened the competitiveness of enterprises to a great extent. With the constant increase of enterprise's data quantity, we should offer the integrated and historical data to senior administrator.Because of its own limit, MIS is unable to support enterprise's decision-making effectively. How to utilize the data of information system in enterprise's department to help senior administrator make decision, this problem becomes increasingly important.Data Warehouse is a kind of technology about data organization and administration, which is suitable for decision-analysis. Data Warehouse can offer the analytical data of decision. Data Warehouse is subject-oriented, integrated, time-variant and nonvolatile collection of data in support of enterprise's decision-making. Collecting the relevant data from the traditional Database Management System, after washing and changing, then structuring the data warehouse, we can build single and analytical environment of decision in support of enterprise's decision-making.This paper introduces the basic of Data Warehouse and rudimentary knowledge of decision-analysis, such as its characteristic, supporting technology and system structure. Taking Port Operation Management System as example, we discuss in detail how to build Data Warehouse from the traditional DBMS and build the model of decision to support the enterprise's making-decision.