Alphabetical classification is based on the occurrence of the letters in the alphabet as it is done for the dictionary. Under the alphabetical classification, the filing of papers and documents is either by the names of the correspondents or the subjects. This method of classification can be used in correspondence filing, contracts, orders and staff records.
In this method of classification, each folder or record is given a number, and the files are placed in strict numerical order. The system of numerical classification is generally recommended for filing of orders, sales, invoices, contracts, (where numbered) and committee minutes.
As the name implies, this classification is based on the geographical origin of a document or paper. This system is combined with one of the two systems already discussed. The classification can be town-wise, district-wise, state wise, country-wise and continent-wise.
Under this method various records are identified and arranged in strict date order and sometimes even according to the time of the day. It is a useful method for filing invoices and other vouchers associated with accounts.This system may be useful if used along with some other system.
It is a method of classification in which all documents relating to a subject are brought together in one file, even though they may have come from different sources and from many different people.