A formula can contain any or all of the following: fields, constants (numbers, text, dates), operators, and functions.
Fig. Parts of a formula
Fields. The value of a data field stored in the database.
Constants. Numbers, text or date values entered directly into a formula.
Operators. A symbol that specifies the type of calculation to perform.
Functions. Pre-written formulas that take a value, perform an operation, and return a value.