Database cluster for mixing various heterogeneous data sources and implementation method

Abstract

The invention provides a database cluster for mixing various heterogeneous data sources. The database cluster comprises a processing layer and a storage layer, wherein the storage layer comprises the various heterogeneous data sources, each heterogeneous data source serves as a virtual node, and each virtual node can be a single database example or database cluster, or a single virtual node or a plurality of virtual nodes; the processing layer comprises a command parsing module, a query optimization module, a metadata management module, an execution planning module, an executer module and an office management module. The database cluster has the advantages and positive effects that the ''heterogeneous data sources'' (such as database products or database clusters purchased by a user) can be accessed by the user through a unified interface, the ''heterogeneous data sources'' are brought into a unified cluster in a virtual node mode for resource management, and thus the operations of data migration, copying, stretching and the like can be flexibly carried out in the ''cluster'' consisting of the ''heterogeneous data sources''.

Description

technical field

[0001] The invention belongs to the technical field of distributed databases, and in particular relates to a database cluster and an implementation method for mixing multiple heterogeneous data sources. Background technique

[0002] Big data technology (big data), or huge amount of data, refers to the amount of data involved is so large that it cannot be captured, managed, processed, and organized within a reasonable time through current mainstream software tools to help enterprises operate Information for more active purposes in decision-making. In "The Age of Big Data" written by Victor Meyer-Schönberger and Kenneth Kukeye, big data refers to the use of all data for analysis and processing without shortcuts such as random analysis (sampling survey).

[0003] Database cluster, as the name implies, is to use at least two or more database servers to form a virtual single database logical image, and provide transparent data services to clients like a single da...

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