Appendix D
EXPRESSIONS AND OPERATORS
RELATIONAL OPERATORS
=
equal
<
less than
>
greater than
<
=
L.E.
>=
G.E.
<>
not equal
BOOLEAN OPERATORS
AND
OR
NOT
ARITHMETIC OPERATORS
+
•
I
t
add
subtract
multiply
divide
exponentiation
(negation)
STRING OPERATOR
+
0·1
(concatenation)