According to Wikipedia,
"In computer science and computer programming, a data type or simply type is a classification identifying one of various types of data, such as real-valued, integer or Boolean, that determines the possible values for that type; the operations that can be done on values of that type; the meaning of the data; and the way values of that type can be stored."
"Almost all programming languages explicitly include the notion of data type, though different languages may use different terminology. Common data types may include:
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Some different types of data are real-valued, integer, or Boolean. Boolean Data is data that represents true or false statements Fixed point data types are convenient for representing monetary values
Types of statistical data include; 1.Numerical 2.Categorical 3.Ordinal
When we enter a variable then we know it what type it belong ,but the compiler does not know it ,for knowing it we declare data types. Storage representations & machine instructions to handle constants differ from machine to machine.The variety of data types available allow the programmer to select the type appropriate to the needs of the application as well as the machine. ANSI C supports 3 types of data types 1.Primary data types 2.Derived data types 3.User defined data types JAVA has 2 types 1.In Built data types 2.User Defined datatypes
data types supported by "C" are int , float , char , long , double , uint
There Are Two main types of data. Qualitative data are expressed As numbers, obtained by counting or measuring. Another type of data is called an inference.An inference is a logical interpretation based on prior knowledge or experience.