5 of EDS Company,taking the release process of aircraft design data of one aviation enterprise for example,the paper has researched the computerized approval process in PDM environment,and has implemented function such as selected promotion and computerized signature of computerized approval process.

Development of the E-approval System Based on the Open Source Workflow engine

Research and Application of Administration Permit E-Supervision Data Acquisition Model;

Design and realization of electronic approval system based on auto CAD;

After analysed the shortages of traditional government and the characteristics of Electronic Approval system,this paper expounds the design and realization of Electronic Approval system which is based on VBA in urban planning.

The Research and Realization of Electronic Approval System of Construction Projects;

This paper firstly puts forward comprehensive plan for electronic approval in the small and medium-sized city, and then discusses some key problems in system construction such as frame, function, approach, mode etc.

In this paper, the advantage and disadvantage of the two implementation approaches of electronic approval for urban planning were analyzed and its basic implementation model was alse discussed.