Database system and database query method and device

A database and data technology, applied in the database field, to achieve flexible query, make full use of resources, and improve query efficiency

Active Publication Date: 2019-07-16
ALIBABA GRP HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This application provides a database system to solve the above-mentioned problems of the existing master-slave database

Method used

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  • Database system and database query method and device
  • Database system and database query method and device
  • Database system and database query method and device

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Embodiment Construction

[0058] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar extensions without violating the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.

[0059] The first embodiment of the present application provides a database system, the schematic diagram of which is as follows figure 1 As shown, it includes: a master database U101, a slave database U102, a slave database U103, a slave database U104 and a query processing unit U105, between the master database U101 and each of the slave databases (U102, U103 and U104), and There are data connections between the respective slave databases (U102, U103 and U104) and the query processing unit U105.

[0060] The data connection...

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PUM

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Abstract

The invention discloses a database system, and a method and device for applying the database system to query the related operation. The system comprises a master database, at least one slave databaseand a query processing unit, the master database and the slave databases are in data connection, and the slave databases and the query processing unit are in data connection; and the query processingunit is used for splitting a query request into the query operation instructions of which the query ranges do not intersect, sending the split query operation instructions to the same or different slave databases for query operation, and feeding back a query result. According to the application, the query efficiency can be improved.

Description

technical field [0001] The invention relates to a database, in particular to a database system. The invention also relates to a method for querying a database and a device for querying a database. It also relates to a method and a device for allocating query tasks. It also relates to a method and a device for performing database queries. It also relates to a method for performing database query and a device for performing database query. Background technique [0002] Non-distributed databases generally adopt a master-slave architecture of one master database plus one slave database or one master database plus multiple slave databases. [0003] In this architecture, the primary database is externally writable. When the data on the primary database is updated, it will be synchronized to the secondary database through the transaction log. Generally, a master database corresponds to one or more slave databases, and each slave database has a complete set of data that is cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/23G06F16/2455G06F16/27
CPCG06F16/23G06F16/24553G06F16/275G06F16/278G06F16/24534G06F16/2471G06F11/2097G06F11/3433G06F11/2069G06F16/27G06F16/2455G06F16/2365
Inventor 张广舟林晓斌范孝剑窦贤明曾文旌周正中熊亮春张文杰
Owner ALIBABA GRP HLDG LTD
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