The difference is that the blockchain (Eth, Solana, etc.) is used as a database. However, it is very inconvenient to receive data from the blockchain, and because of this, even this data is first entered into standard MySQL, Postgres databases and information is taken from there. Naturally, all data needs to be synchronized. There are no more differences.
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What is web3.0 ?
How it is different from current web?
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Thanks