30 April 2009
Cash book is part of Journal(recording each transfer at first instance), however Cash a/c is a ledger. However they both are rearly prepared simulataneously, in mannual a/cing system. cash book records cash / bank and discount transactions , but cash a/c only cash transaction
01 May 2009
When Cash book is maintained it replaces maintenance of Cash A/c or Bank A/c or both in ledger, as the cash column and bank column represent the ledger a/cs for these two accounts.
But discount column is periodically totalled and posted to Discount a/c in the ledger.