6.3.9.1 Proper Syntax Values for Constraint

The following table provides the proper syntax for defining constraints in a row.

Table 6-2 Row Constraints Syntax

Operator	Syntax
Relational Operators	==, !=, >, ³, <, £
Mathematical Operators	+,-, *, /
LogicalOperators	&&, ||, !
Identificationof null strings	isnull(<attribute>)