Blockchains have recently been under the spotlight due to the boom of cryptocurrencies and
decentralized applications. There is an increasing demand for querying the data stored in a …

Despite increasingly emerging applications, a primary concern for blockchain to be fully
practical is the inefficiency of data query. Direct queries on the blockchain take much time by …

Database and Artificial Intelligence (AI) can benefit from each other. On one hand, AI can
make database more intelligent (AI4DB). For example, traditional empirical database …

Blockchain has recently gained massive attention thanks to the success of cryptocurrencies
and decentralized applications. With immutability and tamper-resistance features, it can be …

In this paper, we design and implement the first-ever decentralized replicated relational
database with blockchain properties that we term blockchain relational database. We …

Blockchain technology has attracted much attention due to the great success of the
cryptocurrencies. Owing to its immutability property and consensus protocol, blockchain …

The Industrial Internet of Things (IIoT) has provided a promising opportunity to build
digitalized industrial systems. A fundamental technology of IIoT is the radio-frequency …

Blockchain has emerged as a promising solution for secure data storage and retrieval for
decentralized applications. To scale blockchain systems, a prevailing approach is to employ …

Encrypted multi-map (EMM), as a special case of structured encryption, has attracted
extensive attention recently. However, most of EMM constructions reveal the real volumes of …

Blockchain has recently triggered extensive attention and concern due to the flourish of
cryptocurrencies and decentralized applications. It can be considered as a database, and is …