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Index-based on-chain data query method and device

A data query and indexing technology, applied in database indexing, electronic digital data processing, structured data retrieval, etc., can solve the problems of low efficiency of data query or data retrieval on the blockchain sharing platform, and achieve fast and efficient query and traceability. Effect

Pending Publication Date: 2022-01-07
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, in the application of blockchain technology, most of the research at home and abroad is focused on using the existing characteristics of blockchain to solve the problems of fair sharing and reliable storage of data sharing or traceability in specific scenarios, and few literatures are dedicated to the research area. Low efficiency of data query or data retrieval in block chain sharing platform

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  • Index-based on-chain data query method and device
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  • Index-based on-chain data query method and device

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the embodiments and accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0045] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the drawings, and the related Other details are not relevant to the invention.

[0046] It should be emphasized that the term "comprising / comprising" when used herein refers to the presence of a feature, element, step or component, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0047] In vie...

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Abstract

The invention provides an index-based on-chain data query method and device, and the method comprises the steps: constructing an abstract dictionary tree index for an extracted data abstract, packaging a to-be-chained data abstract and the constructed abstract dictionary tree index into a block structure, and performing chaining; constructing a data operation record for original data operation, constructing or updating a data operation record chain index for the constructed data operation record, packaging the data operation record and the data operation record chain index into a block structure, and performing chaining, wherein the data operation record chain is designed to link all operation records of the same data in a chain structure, and a head node address of the data operation record chain is stored in a corresponding node in the abstract dictionary tree; performing abstract dictionary tree retrieval based on the original data query request to obtain original data; and obtaining a historical operation record of the data abstract through row abstract dictionary tree retrieval and operation record chain retrieval based on the data operation record query request.

Description

technical field [0001] The present invention relates to technical fields such as data retrieval, blockchain, computer, etc., and specifically relates to an index-based on-chain data query method and device. Background technique [0002] Blockchain technology is an emerging technology in the field of information technology. It is an information technology integrated with multiple technologies including distributed data storage and encryption technology. It has the characteristics of decentralization, openness, and non-tampering. Due to the increasing prosperity of decentralized applications, the blockchain has received extensive attention, and the demand for data query in the blockchain is also increasing. The distributed storage and non-tamperable characteristics of blockchain technology are very suitable for safe sharing and reliable traceability of design data. For the traditional blockchain, it needs to perform the data query operation in two steps. First, it traverses a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/27G06F16/2455G06F16/22
CPCG06F16/27G06F16/24553G06F16/2246
Inventor 王红熳刘明民杨放春
Owner BEIJING UNIV OF POSTS & TELECOMM