Research On Virtual Data Integration Model In The Data Center Of Downhole Job

With the continuous development of information technology, data types and data storage areincreasing, enterprise information construction is accelerating. due to reasons such as using datastandard is not unified, data exchange is more and more hard in the enterprise internal or amongenterprises, the number of data islands are increasing sharply. how to make a good use of data whichhas already acquired data and effectively support the enterprise’s business activities anddecision-making, which has become a crucial problem in the process of enterprise informatization.facing the increasingly complex data environment, to establish communication is the priority ofenterprise information construction among data islands. by analyzing various data sources in theconstruction of downhole data center, which exist distribution, heterogeneity, autonomy etc. proposethe virtual data integration architecture, construct the virtual data integration of metadata model, andimplement data integration among the information island on this model.Firstly, according to data sources distributed condition, a data source layer is constructed. the datasource layer, uses the metadata technology, and establishs the virtual data integration site meta model.the meta model implements multiple distributed data sources integration logic interface, by whichforming a unified data access logic interface. to effectively solve the problem of low efficiency of dataaccess, data segmentation technique was used for constructing the data access layer. the granularity ofdata access is refined, and the efficiency of data access is improved.Secondly, aiming at the integration problem among heterogeneous data models, in the frameworkof data dictionary of data center, the model of heterogeneous data mapping support model isestablished. through metadata model driven realize data conversion layer, and to the segmentation ofdata realize data transformation. combination with memory mapping principle at the same time,references the MongoDB as a data cache belt, a large amount of data which is readed that is stored inMongoDB cache, parallel conversion process the data of cache, improve the efficiency of dataintegration.Finally, on the virtual data integration model, combine with middleware, data materialized andNOSQL technology, implement the data the application layer, reference to application metamodel ofthe virtual data integration model for data integration, display, store, meet the demand of enterpriseapplication of the data.Through study the virtual integration model and its implementation technology, in this article,realize the virtual data integration framework on metadata, and implement the prototype system, verify the rationality of the virtual integration of architecture, complete data center virtual data integration,prove the feasibility of the model.