Boolean

Boolean data types indicate if a condition is true or false. You can add these methods to the Boolean data type:

Table 23-1 Boolean Methods and Attributes

Method	Description
and	Enables you to join multiple expression terms as an alternative to using the And operator. Returns True if both the current expression and the specified condition are true.
equals	Returns True if the Boolean contains a value that equals a specified field.
isNull	Returns True if the Boolean has a null value
not	Returns the inverse of the Boolean value
or	Enables you to join multiple expression terms as an alternative to using the Or operator. Returns True if either the current expression or the specified condition are true.

You can add literal values to Boolean data types. See Working with Literal Values.