any row we insert into a table using a special type of 
data column (<tt>INTEGER PRIMARY KEY</tt>).<br />
<br />
We can create the <tt>People</tt> table with this additional 
<tt>id</tt> column as follows:
</font><pre><font size="4" color="blue">
CREATE TABLE People 
    (id INTEGER PRIMARY KEY, name TEXT UNIQUE, retrieved INTEGER)
</font></pre><font color="black">Notice that we are no longer maintaining a friend count in each row
of the <tt>People</tt> table.
When we select <tt>INTEGER PRIMARY KEY</tt> as 