I was working on a crud D-app, coding in solidity. I am unable to figure out how does deletion and updation work on the blockchain network?
1 Answers
There is none. You can only add new transactions. You have to add a new transaction saying something was deleted or updated, and then, whoever is displaying the data needs to see the new transaction and stop displaying the data.
If you are writing a smart contract, you can delete or update data in storage, but other people can still see that data since it's in the previous transactions - there is no privacy.
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