280 Copyright © 2014, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. Chapter 12 Data Modelling of a Multifaceted Electronic Card-Based Secure E-Governance System ABSTRACT In the current climate of global economic decline, the developing countries are facing severe challenges in maintaining an eicient administration within an afordable budget. If this economic slowdown continues, there will be serious diiculties which will hamper the socio-economic development of the entire region. To respond to the situation, the governments must reduce budget expenses and still maintain eiciency and openness. To do so, the administration must deploy ICT-based mechanisms to fulil the desired objectives. In this chapter, the authors present the development of a multifaceted electronic card-based secured e-governance mechanism to attempt to redress the inherent issues and explore new dimensions of interdisciplinary research. The proposed system will also act as the all-purpose electronic identity of the Citizen and hopefully replace the existing identity instruments such as Voter Card, Permanent Account Number Card, Driving License, Ration Card, Below Poverty-Line Card, Employment Card, Health Card, Insurance Card, etc. Moreover, this electronic instrument will also enable Citizen to perform inancial transactions. Clearly, the authentication procedure of the proposed mechanism must also exist otherwise the intruders will be able to breach the system and execute their ill intentions. To ensure appropriate- ness of security features of the mechanism, the authors have also implemented a user authentication technique using object-oriented modelling of RSA digital signature algorithm for a Government-Citizen (G2C) type of e-governance. For better management of such a huge amount of sensitive information, the authors also discuss data modelling techniques used during user authentication of the proposed model. Abhishek Roy The University of Burdwan, India Sunil Karforma The University of Burdwan, India DOI: 10.4018/978-1-4666-6082-3.ch012