Data retrieval method and equipment

A data retrieval and data node technology, applied in the database field, can solve the problem that the number of retrieval servers and retrieval efficiency cannot be balanced, and achieve the effect of improving retrieval efficiency and efficient retrieval

Active Publication Date: 2016-07-27
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Abstract
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Problems solved by technology

[0005] The embodiment of the present invention provides a data retrieval method and equipment to solve the problem that the number of retrieval servers and retrieval efficiency cannot be balanced in the existing data retrieval system

Method used

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  • Data retrieval method and equipment
  • Data retrieval method and equipment

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Embodiment Construction

[0023] Aiming at the above-mentioned problems existing in the prior art, the embodiment of the present invention provides a data retrieval scheme. By improving the data structure of stored data, a data structure including multiple data nodes with multi-layer nesting is established, and using the genetic principle, in each The association relationship is established between the layer data nodes, so as to realize the bidirectional retrieval of keywords up and down, and improve the efficiency of data retrieval.

[0024] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] The data structure of the present invention is as Figure 1a As shown, the data structure includes a plurality of multi-layer nested data nodes, the data nodes of this layer are associated with the data nodes of the upper layer and / or the data nodes of the lower layer, and each data node of the same layer is associated with URLs or pictures...

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Abstract

The invention provides a data retrieval method and equipment. The data retrieval method comprises the following steps: building a data structure including a plurality of multilayer-nested data nodes; building an association relationship among different layers of data nodes; determining the data nodes in the data structure according to a key value identifier of a keyword to be retrieved, or positioning the data nodes layer by layer according to the association relationship among the different layers of data nodes in accordance with a sequence of keywords when a plurality of keywords are to be retrieved; and acquiring corresponding URLs (Uniform Resource Locators) or picture data. Through adoption of the data retrieval method, the complex problems of upward association retrieval and downward association retrieval are solved in a way of building the association relationship among the keywords through a simple data structure and a gene principle; bidirectional association retrieval can be realized through one retrieval server; the retrieval efficiency is increased; and efficient retrieval can be realized without support of a huge amount of hardware.

Description

technical field [0001] The invention relates to the technical field of databases, in particular to a data retrieval method and equipment. Background technique [0002] Traditional search engines based on keyword retrieval usually search based on the keyword index file, that is, to establish the corresponding relationship between keywords and webpage URLs (UniformResourceLocator, Uniform Resource Locator), and link each keyword with webpage URL The corresponding relationship between generates a huge keyword index file in the form of a list, and establishes a search engine keyword database according to the keyword index file, and searches for web page URLs related to keywords by querying the search engine keyword database. [0003] Most traditional storage systems are implemented using non-relational databases such as GFS, RCF, and BigTable. Taking the Bigtable storage system as an example, Bigtable is a sparse, distributed, and persistent storage multi-dimensional ordered map...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/951G06F16/955
Inventor 郭强
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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