SPAY4 · CURRENT DIAGRAM

Cardholder 與 Payment Account

Cardholder 固定屬於 Gateway；Payment Account 是 Deposit 與 Withdrawal 的唯一帳戶候選。

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Cardholder 與 Payment AccountCardholder 固定屬於 Gateway；Payment Account 是 Deposit 與 Withdrawal 的唯一帳戶候選。14 Core + 37 Domain = 51 relations · no database foreign keysupply_cardholderlogical relation / service guardCardholder sessionlogical relation / service guardPayment Accountlogical relation / service guardbalance ledgerlogical relation / service guarddaily counterlogical relation / service guard候選 DDL 以 service transaction、owner guard、immutable snapshot、CAS 和 idempotency 維護完整性。