WebBefore you modify the database-logging mode, read Change the database-logging mode. Weighted sum of two random variables ranked by first order stochastic dominance, Ubuntu won't accept my choice of password, Canadian of Polish descent travel to Poland with Canadian passport. In short, a database transaction is a sequence of multiple operations performed on a database, and all served as a single logical unit of work taking place wholly or not at all. I'm just not sure if the best method is just to have interest rate and overdraft in the account table to be set to null if it is the wrong account type. Yet I have the suspicion that DB transactions are actually not used for such examples, but rather that eventual consistency is achieved with a a journaling system that reconciles inconsistencies at the end of the day. Otherwise, for example, some process could directly insert a transaction into the transactions table and under scheme 1.3 the relevant balance would be out of sync. LOAD tx, err := store.db.BeginTx(ctx, &sql.TxOptions{}) This option allows us to set a custom isolation level for this transaction. Is "I didn't think it was serious" usually a good defence against "duty to rescue"? Can I use my Coinbase address to receive bitcoin? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. On the other hand, I cannot enforce balances be non-negative anymore since views -- even indexed views -- cannot have CHECK constraints. Account (which is primary, or core), Share(s) - For example, Account 01 might have one savings account, one checking account and one Car loan, so Savings(1), Savings(2) and Loan(1) I realize that here is no single answer, but I wonder what is commonly done. UPDATE Should stored financial transactions include some data redundancy? It is not easy to get a list of all transactions (the only way is to unite all transactions from all tables). To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Has the cause of a rocket failure ever been mis-identified, such that another launch failed due to the same problem? For example, if the summaries are monthly: Main idea is storing balance and transaction records in the same table. You can "enforce" a much wider range and complexity of business rules (noting that the concept of "enforce" is a looser one than with DRI), You can still use DRI wherever practical to give the model a more robust underlying integrity - and this can act as a check on your transactional logic, Most of the performance issues that are troubling you will melt away, Introducing new requirements can be much easier - for example: complex rules for disputed transactions might force you away from a pure DRI approach further down the line, meaning a lot of wasted effort, Partitioning or archiving of historical data becomes much less risky and painful, each time there is a transaction (through your API) there is a corresponding update or insert into the summary table, each row in the summary table includes 'opening balance' and 'amount', check constraints such as 'opening balance'+'amount'>0 and 'opening balance'>0 can be applied to the summary table, summary rows could be inserted in a monthly batch to make locking the latest summary row easier (there would always be a row for the current month).

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