EXPRESS-G example lets you understand the importance of the data modeling language for product data. It is a companion to the EXPRESS language for displaying entity and type definition, relationship, and cardinality. Since EXPRESS is an object-oriented language, the EXPRESS-G example shows that variables, integers, and strings are used to display the relationship between a male and a female on the basis of age, first name, last name, nickname, blood group, and description of parents. Instead of creating the EXPRESS-G example from scratch, try using EdrawMax, as it has hundreds of symbols that are extremely useful in designing the EXPRESS-G diagram.