What is the difference between Blockchain and a Database?Generally a database is a collection of data which can be stored and organized using a database management system. The people who have access to the database can view or edit the information stored there. The client-server network architecture is used to implement databases. whereas a blockchain is a growing list of records, called blocks, stored in a distributed system. Each block contains a cryptographic hash of the previous block, timestamp and transaction information. Modification of data is not allowed due to the design of the blockchain. The technology allows decentralized control and eliminates risks of data modification by other parties.
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2019年，年僅15歲的她將體育國籍從美國轉為中國，希望在2022年冬奧前「激勵數百萬北京年輕人——那是我母親的故鄉」。
That feeling of relative security has now been punctured by the violence of the past six months.