Transactions and Referential integrity ensure that your database isI'm not going to argue with you; you like journals and I think they're often overkill. But I will say this: journals do NOT protect you from application failures. If you write bad code, it will write bad transactions, and the journal will happily record them. The only time a journal saves you is if a production program hard halts, and if you have a lot of that, you have much larger problems than a journal can save you from.
always in consistent state. There are many, many factors that can
break your database if you do not use them. Power failures, hardware
failures, application failures, etc.
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