Did not expect this to hit the front page! A few notes: - 1 always represents debit and -1 always represents credit. Regardless of whether it is an asset or li

Did not expect this to hit the front page! A few notes: - 1 always represents debit and -1 always represents credit. Regardless of whether it is an asset or liability account. - Each account has what is called a "normal balance". This tells us whether you increase the value of the account using debits or credits. This is also modeled as 1 or -1. - Amounts are always positive - To find the actual dollar value for a transaction, you can multiply: amount * direction * normal. If the direction and normal are the same sign, then that means we increase the value. Otherwise we decrease. Your code doesn't need to know which accounts are assets vs liability vs equity in this scheme. - Of course, you still need to know whether to insert transactions as debit or credit, and you need to know the normal balance of your accounts. But once you figure that out (by googling, or talking to your finance team) then the data model takes care of the rest.