I want to know about practically maintaining the accounting records.

My Dad is an accountant, and I always read in books - first, all transactions are entered in day books and then into the ledger and then the financial statements.

but when we come to computer accounting software, let's take tally , When using tally

1) do we need to maintain physical day books(like cash or?

2) If no, then what is proof of cash sales.

3) In a private company where the owner is CEO and wife and son are directors. In this situation, is there any limit of withdrawal.

3) in my father's company, he made a cash register where credit daily sales is also recorded while recording in tally. Is that necessary?

4) Do accounting softwares have the feature to keep books of primarybentries/day books i.e purchase day books , cashbook , petty cashbook etc.

5) We know all the non routine transactions come in journal , so please explanin which type of transation and also give examples

6) I know Working capital is used in day to day trading Operations but can't give my self Example , so provide some example

7) how managing the business affairs legally avoid tax