This is a book of separate accounts of each item being 
involved in the business either tangible or intangible.  It 
has each and every transactional activity recorded in it 
under the concerned account which always show a balancing 
figure either debit or credit which may later be squared up 
by adjusting entries.  It is More useful in Double Entry 
System of accounting.

General ledger means other than that of purchase ledger and 
sales ledger where the cash or bank transaction is not 
involved like accrual transaction or rectification entry. 
Etc