Logical Data Modeling - Value (Operand)
Table of Contents
1 - About
A value may be obtained by:
- observation
- or measurement
Values may represents the structural characteristic of:
- or a relationship
A value is stored in a field (cell).
2 - Articles Related
3 - Set
Values are classified into different value sets called attribute (feet, color, first-name, and last-name) and inherit the attribute properties
4 - Property
The properties of the value are defined on the attribute level such as:
- the type (data type) that constrains the values.
- the domain that define a set of permitted values
- …