Briefly explainedA Boolean operator is a concatenation of operations that returns a Boolean value as a result. The best known Boolean operators are "AND", "OR" and "NOT".

Examples:

AND: The expression "A AND B" is true if both A and B are true.
OR: The expression "A OR B" is true if either A or B or both are true.
NOT: The expression "NOT A" is true if A is false and vice versa.