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Data query method, device, equipment and storage medium

A data query and data technology, applied in the database field, can solve the problem of low efficiency of data query

Active Publication Date: 2021-09-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The entire data query process requires multiple communications between the federated data query process and the graph data query process, making data query inefficient

Method used

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  • Data query method, device, equipment and storage medium
  • Data query method, device, equipment and storage medium
  • Data query method, device, equipment and storage medium

Examples

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Embodiment Construction

[0043] The embodiment of the present application provides a data query method, device, equipment and storage medium, which is applied to the mixed query of graph database and non-graph database. In order to use data federation technology to combine multiple homogeneous or heterogeneous relational databases, non-relational databases (referred to as NoSQL), network services, files and other data sources into one database. The mixed query here refers to the query of graph data and non-graph data. In the embodiment of the present application, a non-graph database is used as an example to describe a database synthesized by multiple homogeneous or heterogeneous databases by using data federation technology, and the mixed query refers to the query of graph data and federated data. Querying the database synthesized by data federation technology is federated data query.

[0044] figure 1 It is a schematic diagram of a data query system in the embodiment of this application. Such as ...

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Abstract

The present application provides a data query method, apparatus, device and storage medium, and relates to the field of databases. The data query method, applied to a process, includes: receiving a mixed query statement, decomposing the mixed query statement into a graph data query statement and a federated data query statement, wherein the graph data query statement and the federated data query statement contain filtering query conditions; The priority of the graph data query statement and the federated data query statement decomposed by the query statement determines the execution order of the graph data query statement and the federated data query statement. Input, the query statement includes a graph data query statement or a federated data query statement; according to the execution order, the graph data query statement and the federated data query statement are executed in sequence, and the data that meets the filtering query conditions is used as the query result. The data query efficiency can be improved by using the technical solution of the present application.

Description

technical field [0001] The present invention relates to the field of databases, in particular to a data query method, device, equipment and storage medium. Background technique [0002] A database is a warehouse that organizes, stores and manages data according to its data structure. A system can include multiple databases, and a complex business process often needs to query multiple databases. In order to perform data query in multiple databases, data federation (that is, Data federation) technology can be used. Data federation technology is to form multiple homogeneous or heterogeneous databases into a single virtual database and unify the access entrance. That is to say, using data federation technology, multiple databases can be accessed through one access portal. In addition to forming multiple databases into a single virtual database, a single virtual database can also support data sources such as files or network services (ie, WebService). [0003] Databases can i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/242G06F16/25
CPCG06F16/2433G06F16/25
Inventor 覃超立姚理
Owner HUAWEI TECH CO LTD