The illustration shows the Predicting Customer Gender workflow. A CUSTOMERS data source icon is in the upper left. To the right, at the top there is a Join icon. To the right is a Class Build icon. Below, there a SALES data source icon. To the right there is an Aggregate node icon. To the right there is a Create Table icon. An arrow extends from the Customers icon to the join icon. An arrow extends from the join icon to the Class Build icon. An arrow extends from the sales data source icon the aggregate icon, indicating a connection. An arrow extends from the Aggregate icon to the create table icon. An arrow extends from the create table icon to the Join icon.