王千阁,何蒲,聂铁铮,申德荣,于戈.区块链系统的数据存储与查询技术综述[J].计算机科学,2018,45(12):12-18
区块链系统的数据存储与查询技术综述
Survey of Data Storage and Query Techniques in Blockchain Systems
投稿时间:2017-12-22  修订日期:2018-04-20
DOI:10.11896/j.issn.1002-137X.2018.12.002
中文关键词:  区块链,数据库,存储管理,查询处理,索引结构
英文关键词:Blockchain,Database,Storage management,Query processing,Index structures
基金项目:本文受国家自然科学基金课题(U1435216,61433008),中央高校基本科研业务费(N150408001-3,N150404013),辽宁省自然科学基金(2015020018)资助
作者单位E-mail
王千阁 东北大学计算机科学与工程学院 沈阳110169 wangqiange@stumail.neu.edu.cn 
何蒲 东北大学计算机科学与工程学院 沈阳110169  
聂铁铮 东北大学计算机科学与工程学院 沈阳110169  
申德荣 东北大学计算机科学与工程学院 沈阳110169  
于戈 东北大学计算机科学与工程学院 沈阳110169  
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中文摘要:
      目前,以比特币和以太坊为代表的区块链系统已经日趋成熟,区块链技术成为学术界与工业界的研究热点。然而,这些区块链系统在实际应用中因数据存储模式限制而普遍面临着查询功能简单、查询性能较低等严重问题。 文中重点对区块链系统的数据存储与查询技术的研究进展进行综述与展望。首先,介绍当前流行区块链系统中使用的数据存储机制和查询处理策略。然后,详细介绍在现有区块链系统基础上扩展查询处理功能的两种方法,并从查询效率、写性能优化、存储空间占用、数据安全性和可用性5个方面对其进行对比和分析。最后,分析了未来区块链系统的查询技术发展趋势,探讨了其主要的研究方向。
英文摘要:
      At present,blockchain systems,represented by Bitcoin and Ethereum,are becoming more and more mature,and blockchain technology has become a hot topic in academic and industrial circles.However,in practical applications,these systems are generally faced with tough problems such as simple query function and low query performance due to the limitation of data storage scheme.This paper presented the survey and prospect of the research progress on data storage and query technology of blockchain systems.First,the data storage mechanism and query processing strategy used in current popular blockchain systems were introduced .Then,two methods of extending query processing functions on the existing system were introduced in details.The features of their query efficiency,write performance optimization,storage space occupancy,data security and availability were compared and analyzed in detail.Finally,the trend of the query technology development in the future block chain system was analyzed,and the main research direction was discussed and explored.
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