Networking data sharing system and method based on virtual view

Abstract

The invention discloses a networking data sharing system and a method based on a virtual view, a description part of a data source is used to describe the data source; an editing part of the virtual view is used to edit the virtual view; a registering part of metadata is used to register the metadata of the data source and / or the metadata of the virtual view; a metadata directory service is used to receive, list, store and query the data source and / or the metadata of the virtual view; a data sharing query service is used to receive a query request of an external application, a final result isgenerated after steps such as query request analysis, query decomposition, data obtaining, result generating and the like and is returned to the external application by an XML file type. Data sharingquery cross multiple data sources is supported by the invention, customizing virtual view according to data requirement is supported, data source expansion is conveniently supported, thereby being helpful to increase the usage ratio of the existing data resource and providing a real feasibility for the reorganization and recycle of the data resource.

Description

technical field [0001] The invention relates to the field of data sharing, in particular to a virtual view-based networked data sharing system and method among heterogeneous data sources in a networked environment. Background technique [0002] At present, with the development of IT technology, various industries, units or institutions, and departments have gradually realized business informatization, established a large number of information systems, and accumulated more and more data assets. However, these data are generated at different time stages and for different needs. These data lack a unified design and are stored on different platforms, forming a large number of distributed heterogeneous data sources. These isolated heterogeneous data sources Structural data sources are also referred to as "islands of information". These data assets are difficult to share. In order to share data resources, the conventional method is to establish a data center and establish a centr...

AI Technical Summary

Problems solved by technology

This method has disadvantages such as high software and hardware maintenance costs, excessive pressure on the data center, and high cost of data synchronization.

[0003] Commercial databases also provide some functions for data sharing between heterogeneous data sources. For example, Oracle provides heterogeneous services that can support data queries across multiple data sources (heterogeneous database platforms), but this depends on specific commercial Database platform, and different commercial database platforms are quite different and difficult to unify

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