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.
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