Access is a relational database that lets you have multiple tables of data, and define a relationship among them. In access you can even select data from multiple tables at once when you build a query. But to do this you need to have a way of correlating data from different tables. This is done by the primary key. A primary key is a unique identifier for each person/object in the database. If that is so way can't I have my six tables linked together as one?