Data query method and device
A data query and database technology, applied in the field of database query, can solve problems such as reducing the processing performance of local servers, hidden dangers of network security, and local server crashes
Active Publication Date: 2019-07-16
BEIJING GRIDSUM TECH CO LTD
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Problems solved by technology
[0004] However, in order to avoid the hidden dangers of network security caused by the comprehensive data query system being connected to multiple databases through the external network, the existing method is to only allow the comprehensive data query system to be connected to a local server through the external network, and the The local server is connected to other databases in order to obtain data from other databases. Accordingly, when the comprehensive data query system receives a query request initiated by a user, it can use the local server connected to it to obtain data from multiple other databases at the same time. And centrally process the acquired data on the local server to perform related calculations, obtain the query results that match the query request initiated by the user, and return to the comprehensive data query system. Since many other databases are connected to this local server, the The local server needs to process a huge amount of data and calculations, which reduces the processing performance of the local server and may even cause the local server to crash
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[0061] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0062] The embodiment of the present invention provides a data query method, such as figure 1 As shown, this method is based on the target query performance contained in the received user-initiated data query request, and selects the query logic that meets the target query performance, so as to realize the optimized data query method and distribute the query pressure on the local server to multiple other On the database, while alleviating the q...
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The invention discloses a data query method and device, and relates to the technical field of database query. When a user query request is received, query pressure borne by a local server can be shared to a plurality of other databases, the data query efficiency is improved while the query pressure of the local server is relieved, and the main technical scheme includes: receiving the data query request which at least comprises target query performance; obtaining historical query performance corresponding to each data query mode, the data query modes at least comprising a first query mode and asecond query mode, and the historical query performance of the first query mode being superior to the historical query performance of the second query mode; judging whether the historical query performance of the second query mode reaches the target query performance or not; if yes, executing data query by adopting the second query mode; and otherwise, executing data query by adopting the first query mode.
Description
technical field [0001] The invention relates to the technical field of database query, in particular to a data query method and device. Background technique [0002] Database technology is one of the fastest growing and most widely used technologies in computer science and technology. It has been widely used in computer-aided design, artificial intelligence, e-commerce, administrative management, scientific computing and many other fields, and has become a computer information system. And the core technology and important foundation of other application systems. [0003] At present, for a comprehensive data query system, its data sources often come from multiple databases, such as the multimedia intelligent analysis system, which can obtain data from multiple databases connected to the viewing query system, public opinion system, and so on. When a user initiates a query to the comprehensive data query system, the comprehensive data query system can obtain data from multiple...
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Login to View More IPC IPC(8): G06F16/245G06F16/27
CPCG06F16/245G06F16/27
Inventor 焦张波
Owner BEIJING GRIDSUM TECH CO LTD