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Data Types :
A data type defines a collection of data values and a set of predefined operations on those values.
A descriptor is the collection of the attributes of a variable.
The word object is often associated with the value of a variable and the space it occupies.
Types of Data Types:
i. Primitive Data Types
ii. Structured Data Types
Uses of the type system of a programming language:
i. Error detection
ii. Program modularization
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