Abstract: To satisfy the need of simple, efficient and high-available large-scale database system. This paper defines service-oriented architecture, which divides the complicated system into many service modules. Each of the modules realizes its functions independently. It also introduces how the architecture achieves service harmonization, deployment, communication and high-availability to keep uniform management and contact among these loosely coupled services. Service-oriented architecture simplifies large-scale database system and makes the system architecture much clearer.

Key words: Large-scale database system, Service-oriented architecture(SOA), Internet communications engine (ICE)

摘要： 为了满足复杂的大规模数据库系统所要求的简单、高效、高可靠的需求，该文定义了面向服务的架构。该架构把繁杂多变的系统模块分为多个服务模块，每个模块独立实现其功能，介绍了面向服务的架构如何处理服务间的协调、部署、通信和高可用方案，使诸多松散耦合的服务保持统一的管理和彼此间的联系，面向服务的架构大大简化了复杂的大规模数据库系统，并使整个系统的结构清晰化。

关键词: 大规模数据库系统, 面向服务的架构, 互联网通信引擎