What are the different parts of an expression in access?

In Microsoft Access, an expression consists of several components, including operators, constants, and functions. Operators perform operations on values, such as arithmetic (+, -, *, /) or comparison (=, <, >). Constants are fixed values like numbers or text strings, while functions are predefined calculations or procedures, such as SUM, AVG, or NOW, that manipulate data. Together, these parts allow for the creation of complex calculations and data manipulations within queries, forms, and reports.