About

A Predicate is an boolean expression that evaluates to:

• TRUE,
• FALSE,
• or UNKNOWN.

A predicate acts as a filter that filters a certain number of element from a collection (set)

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Syntax

comparison expression + boolean operator + comparison expression + boolean operator + ...

where:

• comparison expression is Ordinal Data - Comparison Operator (Order, Equality)
• boolean operator is Boolean - (Logical) Operator (OR, AND, XOR, )