Examples need to have titles

Doc/course.xml

@@ -30,7 +30,7 @@
     </annotation>
   </info>
-  <part>
+  <part xml:id="sda1">
     <title>Structured Data and Applications 1</title>
     <chapter xml:id="prerequisites">
@@ -1130,6 +1130,8 @@ drwxr-xr-x 4 goik fb1prof 4096 Nov  8 22:04 ..
           <programlisting>Successfully inserted 1 dataset(s)</programlisting>
           <qandaset role="exercise">
+            <title>Exception on inserting objects</title>
+
             <qandadiv>
               <qandaentry>
                 <question>
@@ -1317,6 +1319,10 @@ drwxr-xr-x 4 goik fb1prof 4096 Nov  8 22:04 ..
           </qandaset>
           <qandaset role="exercise">
+            <title>Closing <trademark
+            xlink:href="http://electronics.zibb.com/trademark/jdbc/29545026">JDBC</trademark>
+            connections</title>
+
             <qandadiv>
               <qandaentry>
                 <question>
@@ -15305,7 +15311,7 @@ leader-pattern="dots"/&gt;C&lt;fo:leader leader-pattern="dots"/&gt;D&lt;/fo:bloc
     </appendix>
   </part>
-  <part>
+  <part xml:id="sda2">
     <title annotations="ws/eclipse/HibIntro/target/classes">Structured Data
     and Applications 2</title>
@@ -16007,6 +16013,8 @@ Hibernate:
 Found user 'Martin Goik'</programlisting>
           <qandaset role="exercise">
+            <title>Choosing the correct method</title>
+
             <qandadiv>
               <qandaentry>
                 <question>
@@ -16133,6 +16141,11 @@ uid=goik, Martin Goik
 uid=wings, Fred Wings</programlisting>
           <qandaset role="exercise">
+            <title><abbrev
+            xlink:href="http://docs.jboss.org/hibernate/orm/4.1/manual/en-US/html/ch16.html">HQL</abbrev>
+            and <acronym
+            xlink:href="http://en.wikipedia.org/wiki/Sql">SQL</acronym>.</title>
+
             <qandadiv>
               <qandaentry>
                 <question>
@@ -16578,6 +16591,10 @@ public class Project {
           </calloutlist>
           <qandaset role="exercise">
+            <title><abbrev
+            xlink:href="http://www.javaworld.com/javaworld/jw-01-2008/jw-01-jpa1.html">JPA</abbrev>
+            requirements.</title>
+
             <qandadiv>
               <qandaentry>
                 <question>
@@ -17242,6 +17259,8 @@ Caused by: java.sql.SQLException: Field 'bankName' doesn't have a default value<
             classes.</para>
             <qandaset role="exercise">
+              <title>Mapping figures</title>
+
               <qandadiv>
                 <qandaentry>
                   <question>
@@ -17407,6 +17426,10 @@ public class RetrieveAll {
             </informaltable>
             <qandaset role="exercise">
+              <title><abbrev
+              xlink:href="http://www.javaworld.com/javaworld/jw-01-2008/jw-01-jpa1.html">JPA</abbrev>
+              constraints and database integrity.</title>
+
               <qandadiv>
                 <qandaentry>
                   <question>
@@ -17417,7 +17440,7 @@ public class RetrieveAll {
                     xlink:href="http://www.oracle.com/us/technologies/java">Java</trademark>
                     objects? On contrary: Are there possible database states
                     which do not correspond to the domain model's object
-                    constraints? </para>
+                    constraints?</para>
                   </question>
                   <answer>