Click the [...] button next to Edit schema to open the Schema dialog box and define the data structure of the
database table to read data from.
In this example, the database table structure is made of four columns,
id (type Integer, 2 characters long),
firstName (type String, 15 characters
long), lastName (type String, 15
characters long), and city (type String,
15 characters long). When done, click OK to
close the dialog box and propagate the schema settings to the next
component.