Numbering scheme

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There are many different numbering schemes for assigning nominal numbers to entities. These generally require an agreed set of rules, or a central coordinator. The schemes can be considered to be examples of a primary key of a database management system table, whose table definitions require a database design.

6tyh Other numbering schemes are listed by field below.

Chemistry[edit]

Communications[edit]

Products[edit]

People[edit]

Topics[edit]

Geography and transport[edit]

See also: Country code; Address (geography).

Vehicles[edit]

Roads[edit]

Road numbering schemes

Others/general[edit]

See also[edit]