Information systems planners in accordance with the specific information system planning methods developed information architecture.Information Engineering follow（  ）approach,in which specific information systems from a wide range of information needs in the understanding derived from（for example,we need about customers,products,suppliers,sales and processing of the data center）,rather than merging many detailed information requested（orders such as a screen or in accordance with the importation of geographical sales summary report）.Top-down planning will enable developers（  ）information system,consider system components provide an integrated approach to  enhance the information system and the relationship between the business objectives of the understanding,deepen their understanding of information systems throughout the organization in understanding the impact.

Information Engineering includes four steps:（  ），（  ），design and implementation. The planning stage of project information generated inforamtion system architecture,（  ）enterprise data model.