Abstract: For the requirements of building Project Information Portal (PIP) data center based on a unified data model, a manageable entity object-oriented data model was proposed. The project data were treated as a series of managerial entity based on management workflows which were decomposed according to the whole life cycle. The conceptual layer data model was designed. The project data could be naturally represented and recorded by using this model. The data organization method was presented based on MongoDB (document-oriented database technology). The cluster storage architecture for PIP was also addressed. The experiments show that it has efficient performance in data writing and querying. It also has high availability and storage capacity scalability.

Key words: project information portal, project data model, project management information, information integration, document-oriented database

摘要： 针对建立统一数据模型的PIP数据中心的需求，提出一种面向管理实体对象的数据基本模型，把工程项目数据按项目全生命周期过程分解为若干个基于工作流的可管理的实体对象，给出了项目工程数据概念层模型，利用该模型实现项目工程数据的自然表达和记录。进一步，基于文档型数据库MongoDB技术提出工程项目数据的组织方法，并设计了存储服务集群架构方案。实验表明，该存储方案具有高效的数据写入和查询性能，具有服务高可用性和存储能力的可扩展性等特点。

关键词: 项目信息门户, 项目数据模型, 工程管理信息, 信息集成, 文档型数据库