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A query method, device, medium, equipment and system for a heterogeneous database

A database and structured query technology, applied in the database field, can solve problems such as increased query troubles, and achieve the effect of saving learning costs

Active Publication Date: 2022-06-21
SHANGHAI YITU NETWORK SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the query languages ​​supported by various databases may be different, this way of using heterogeneous databases to store data will increase the trouble of querying, and redefining a domain-specific language for unified query will bring new learning costs

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  • A query method, device, medium, equipment and system for a heterogeneous database
  • A query method, device, medium, equipment and system for a heterogeneous database
  • A query method, device, medium, equipment and system for a heterogeneous database

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Embodiment Construction

[0038] The embodiments of the present invention are described below by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the invention will be presented in conjunction with the preferred embodiment, this does not mean that the features of the invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiments is to cover other options or modifications that may be extended based on the claims of the invention. The following description will contain numerous specific details in order to provide a thorough understanding of the present invention. The invention may also be practiced without these details. Furthermore, some specific details will be omitted from the description in order to avoid obscuring or obscuring the gist of the present invention. It should...

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Abstract

The invention relates to a query method for a heterogeneous database, comprising: receiving a structured query statement input by a user for querying data stored in a heterogeneous database, the heterogeneous database includes multiple databases and the query language of at least one of the databases is different from Structured query language; determine one or more target databases from heterogeneous databases, the data of the target database contains the target content type specified in the structured query statement; for each target database, convert the structured query statement to Query statement of the query language; use each query statement based on the query language of each target database to perform query operations on each target database. In the present invention, the user does not need to master the storage arrangement of each database in the heterogeneous database, and does not need to master the query language of each database in the heterogeneous database, which saves a lot of learning costs. The invention also relates to a heterogeneous database query device, medium, equipment and system.

Description

technical field [0001] The invention belongs to the technical field of databases, and in particular relates to a query method, device, medium, equipment and system for heterogeneous databases. Background technique [0002] In the prior art, a combination of multiple databases is often used to store massive data, specifically arranging the data to be stored in various databases according to their own characteristics. This method can make full use of the advantages of various databases to improve the accuracy of Query efficiency of massive data. However, since the query languages ​​supported by various databases may be different, this way of using heterogeneous databases to store data will increase the trouble of querying, and redefining a domain-specific language for unified query will bring new learning costs. . SUMMARY OF THE INVENTION [0003] In order to solve all or part of the above problems, a first aspect of the present invention provides a method for querying het...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/242G06F16/28
CPCG06F16/2433G06F16/28
Inventor 王鼎
Owner SHANGHAI YITU NETWORK SCI & TECH