The AccountTransactionCumalativeBalance table stores Account Transactions and their Cumulative Balances in the Account package. This table is populated when Transactions are created, and its contents are updated with each new Transaction. It contains data such as TransactionId, AccountId, TransactionType, Amount, Balance and Date. The Balance is calculated by summing up all the Transactions up to the specified Date. This table is useful for generating balance sheets and other financial reports.