Abstract
With the emergence of digital currencies, blockchain systems have been committed to the efficient and trusted storage of data, building decentralized, tamper-proof, persistent, and anonymous digital ledger. Researchers have devoted considerable attention to query methods on blockchain platforms, leading to numerous developments and advancements. There is an imperative need for a comprehensive investigation of all these efforts, as well as their most recent progress and results. This study strives to provide a comprehensive and thorough survey of notable works and recent progress related to query technologies and theories. In general, blockchain query methods rely on utilizing distributed databases, data indexing structures, and cryptographic algorithms to achieve efficient, verifiable, and secure queries. Beyond the above, we examine existing issues of blockchain query technologies and theories on query efficiency, reliability, and security. In the end, this work concludes with a summarization on typical scenarios of blockchain query schemes, as well as a discussion of future challenges to be addressed in future research.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
