Double entry system
Explanation: Under single-entry system, only cash and personal accounts are maintained. Dual aspect, i.e. double-entry system, is not followed. Hence, single-entry system is considered unscientific and incomplete. On the other hand, double-entry system is considered as a more scientific and complete system of accounting because dual aspect of a transaction (i.e. both debit and credit aspects of a transaction) is recorded. Transactions related to real, personal and nominal accounts are recorded. Hence, it is considered more reliable.