/*** <title editable="nocomment">Example 12</title>* <h1>Example 12: Database Notebook</h1>* <dl>* <dt>Chap11a: assertz <a href="chap11a.html">More..</a></dt>* <dt>Chap11b: retract <a href="chap11b.html">More..</a></dt>* <dt>Chap11c: dynamic <a href="chap11c.html">More..</a></dt>* </dl>*/