built upon.&nbsp; For each model that you use in your application, you need a separate DBDatabase object.</font>

<p><font face="Times">You rarely create a DBDatabase object directly in your application.&nbsp; Instead, you ask the DBDatabase class to find, and return to you, the object that corresponds to a particular model file.&nbsp; You do this by passing the name of the model as the first argument to the <b>findDatabaseNamed:connect:</b> class method.&nbsp; DBDatabase objects that are retrieved through 