Click the Exhibit button.

You want to build a FileMaker Pro 8 database that models a business organizational chart. One person may manage zero or more people. One person may be managed by at most one other person.

You want to build the system in such a way that a single layout showing information about a person can display both the name of the current person's manager (if any) and the names of all people managed by the current person.

What is the minimum number of tables you must define in the Tables tab of the Define Database dialog to construct the layout?