This paper proposes an agent-based data access mechanism of mobile device. In the mechanism, mobile device use agents to manage local database and connect to remote agent. Remote agent receives data and query remote database. The local database is designed using partial detailed concept. The partial detailed database can store different details of content for query to avoid unnecessary connection to reduce local memory space, data flow, and energy. The performance evaluation is conducted to demonstrate the effectiveness of the remote data access. An implementation of proposed mechanism also shows that the mechanism is suitable for the mobile computing environment.