Boolean operators are used to express logical relationships between expressions or constraints.

Operators	Description
And	And True False Invalid True true false true False false false false Invalid invalid false invalid
Implies	Implies True False Invalid True true false invalid False true true true Invalid true invalid invalid
Or	Or True False Invalid True true true true False true false invalid Invalid true invalid invalid
Not	Not Result True false False true Invalid invalid
Xor	Xor True False Invalid True false true invalid False true false invalid Invalid invalid invalid invalid

See also: OCLOperators