Logical Data Modeling - Value (Operand)

Data System Architecture

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A value may be obtained by:

Values may represents the structural characteristic of:

A value is stored in a field (cell).

Set

Values are classified into different value sets called attribute (feet, color, first-name, and last-name) and inherit the attribute properties

Property

The properties of the value are defined on the attribute level such as:





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Card Puncher Data Processing
(Data) Type - (Datatype|Type of data)

Variables, parameters, and function may be typed (static typing) and return values that are typed (as do a database column). The type of a variable or expression defines the characteristics of the values...



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