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My DBS textbook says that if each transaction individually maintains consistency in the system, in the case of concurrent transactions, serializability ensures consistency. I am not able to understand what this means. Can someone explain?

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    The statement seems pretty clear to me; with which part of it specifically do you have trouble?
    – mustaccio
    Mar 29, 2022 at 16:45
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    Maybe you could write down a few scenarios of various transactions, then walk through in your mind or on paper what data is changed when, then maybe that will help clear things up, or edit your question to add specific examples.
    – Mark Stewart
    Mar 30, 2022 at 1:12

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