An expression is a statement about data objects. Expressions are used in component rules in the schema designer and in map rules in the map designer.

The following are examples of expressions:

Account Balance = Credits - Debits
TrunkRoom < 15
PRESENT (Store#:StoreInfo)

As you enter an expression, you can add spaces before and after component names and operators to make the expression more readable. Additional spaces have no effect on an expression.

Expressions are a combination of literals, object names, operators, functions, and map names.