【摘要】 元数据是解决数据共享的技术手段之一 ,现有以元数据为基础的管理模型和管理系统主要针对元数据本身的管理 ,元数据和数据集在管理上是相对独立的 ,这直接导致了元数据和数据集的不一致性。在元数据与数据集内在联系的基础上 ,本文提出了实现元数据和数据集一体化管理的应用模型 ,该模型由综合管理层、服务层、应用层三层体系结构组成 ,通过服务流、数据流、元数据流的交互 ,实现元数据和数据集的同步一体化管理。从数据集对象的建立、数据集对象的查询和获取、数据集对象的变更三个应用方面 ,文章详细阐述了该应用模型的实现流程。最后 ,采用基于元数据和数据集一体化模型开发的 I-IMS系统 ,在厦门市环保局元数据管理系统的建设中进行了典型应用研究更多还原

【Abstract】 Metadata is one of the valid technique for data sharing. Current Metadata management models and management systems focus on the Metadata, the management of Dataset is independent, and there is no direct connection between Metadata and Dataset, it leads to the inconsistency of Metadata and Dataset. Due to the direct relationship of Metadata and Dataset, the management model based on Metadata and Dataset is given, it consists of three level including integrating management level, service level, application level and solve the independent management of Metadata and Dataset. Integrating management level exchanges services flow with service level. Service level manages the distributing Metadata servers and Dataset servers, and it exchanges Metadata information flow and Dataset information flow with application level. Application level consists of customer machines. In addition, the application flow of this model is explained in three parts. The first part is the construction of Dataset object. it includes the filling and registering Metadata, submitting the Dataset to Dataset server. The second part is Dataset object querying and getting. it includes searching the Dataset based on the Metadata searching engine, and downloading the Dataset from Dataset server. The third part is Dataset object revising. it includes the Metadata revising in Metadata Server and Dataset revising in Dataset server consistently. In the end, with IIMS which is based on the integrating application model, typical application research is done in Xiamen Environment Bureau’s Metadata management system.更多还原