Query Optimization Scheme for Edge Device Data Management Based on Consortium Chain

Abstract

As a distributed ledger jointly maintained by multiple parties that do not trust each other [1], the data services provided by the blockchain system must ensure that the results cannot be tampered with. However, the query on blockchain is affected by the chain structure. This paper adds relational semantics to block data. So, it can support three basic query methods and accelerate a unique query method for blockchain. In addition, we design four types of indexes to ensure the efficiency of data query. We optimized the query processing and tested it in the edge device scenario and taking the Internet of Vehicles as an example. The result shows that the response time for the query is significantly reduced.