Answer Posted / sikander
In programming, classification of a particular type of
information. It is easy for humans to distinguish between
different types of data. We can usually tell at a glance
whether a number is a percentage, a time, or an amount of
money. We do this through special symbols -- %, :, and $ --
that indicate the data's type. Similarly, a computer uses
special internal codes to keep track of the different types
of data it processes.
Most programming languages require the programmer to
declare the data type of every data object, and most
database systems require the user to specify the type of
each data field. The available data types vary from one
programming language to another, and from one database
application to another, but the following usually exist in
one form or another:
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