diff --git a/calendar/calendar_schema.psql b/calendar/calendar_schema.psql
index a29b49c..9a9007f 100755
--- a/calendar/calendar_schema.psql
+++ b/calendar/calendar_schema.psql
@@ -43,6 +43,7 @@
 ( Paper_ID      char(18),
   Section_ID    varchar(10),
   Title         text not null,
+  Continuation  text not null, -- needed if a section spans mid-semester break
   URL           text,
   
   primary key ( Paper_ID, Section_ID ),
@@ -55,7 +56,7 @@
   Lecture_Date  date check ( Lecture_Date >= Week_Starting ),
   Title         text not null,
   URL           text,
-  Section_ID    varchar(10),
+  Section_ID    varchar(10) not null,
   Is_Holiday    boolean default false not null,
   
   primary key ( Paper_ID, Week_Starting, Lecture_Date ),
@@ -99,26 +100,26 @@
 
 
 -- Some test data.
-insert into paper_offering (paper_Code, year_offered, period_code, campus_code) values ('INFO212', 2009, 'S1', 'DNS');
-insert into paper_offering (paper_Code, year_offered, period_code, campus_code) values ('INFO321', 2009, 'S2', 'DNS');
-
-insert into week values ('INFO212_S1DNS_2009', date '2009-03-02', date '2009-03-06', false);
-insert into week values ('INFO212_S1DNS_2009', date '2009-03-09', date '2009-03-13', false);
-insert into week values ('INFO212_S1DNS_2009', date '2009-03-30', date '2009-04-03', false);
-insert into week values ('INFO212_S1DNS_2009', date '2009-04-13', date '2009-04-17', true);
-
-insert into section values ('INFO212_S1DNS_2009', 'intro', 'Introduction', 'http://info-nts-12.otago.ac.nz/info212/Lectures/Chapter0combined.pdf');
-insert into section values ('INFO212_S1DNS_2009', 'RDBMS', 'Relational DBMS', 'http://info-nts-12.otago.ac.nz/info212/Lectures/Chapter1combined.pdf');
-
-insert into lecture values ('INFO212_S1DNS_2009', date '2009-03-02', date '2009-03-02', 'Introduction', null, 'intro', false);
-insert into lecture values ('INFO212_S1DNS_2009', date '2009-03-02', date '2009-03-05', 'What is a DBMS?', null, 'RDBMS', false);
-insert into lecture values ('INFO212_S1DNS_2009', date '2009-03-09', date '2009-03-09', 'Functions of a DBMS', null, 'RDBMS', false);
-insert into lecture values ('INFO212_S1DNS_2009', date '2009-03-09', date '2009-03-12', 'The relational model', null, 'RDBMS', false);
-
-insert into other_class values ('INFO212_S1DNS_2009', date '2009-03-09', 'laboratory', 'Introduction (Oracle, TOAD)', 'http://info-nts-12.otago.ac.nz/info212/Labs/lab01/lab01-questions.html');
-insert into other_class values ('INFO212_S1DNS_2009', date '2009-03-09', 'tutorial', 'Database management systems', 'http://info-nts-12.otago.ac.nz/info212/Tutorials/tut01/tut01-questions.html');
-
-insert into reading values ('INFO212_S1DNS_2009', date '2009-03-02', 'Text Chs. 1 & 2');
-insert into reading values ('INFO212_S1DNS_2009', date '2009-03-09', 'Text �3.1�3.2');
-
-insert into assessment values ('INFO212_S1DNS_2009', date '2009-03-30', timestamp '2009-04-01 17:00:00', 'Assignment 1', 'http://info-nts-12.otago.ac.nz/info212/assessment/Assignment1.html');
+--insert into paper_offering (paper_Code, year_offered, period_code, campus_code) values ('INFO212', 2009, 'S1', 'DNS');
+--insert into paper_offering (paper_Code, year_offered, period_code, campus_code) values ('INFO321', 2009, 'S2', 'DNS');
+--
+--insert into week values ('INFO212_S1DNS_2009', date '2009-03-02', date '2009-03-06', false);
+--insert into week values ('INFO212_S1DNS_2009', date '2009-03-09', date '2009-03-13', false);
+--insert into week values ('INFO212_S1DNS_2009', date '2009-03-30', date '2009-04-03', false);
+--insert into week values ('INFO212_S1DNS_2009', date '2009-04-13', date '2009-04-17', true);
+--
+--insert into section values ('INFO212_S1DNS_2009', 'intro', 'Introduction', 'http://info-nts-12.otago.ac.nz/info212/Lectures/Chapter0combined.pdf');
+--insert into section values ('INFO212_S1DNS_2009', 'RDBMS', 'Relational DBMS', 'http://info-nts-12.otago.ac.nz/info212/Lectures/Chapter1combined.pdf');
+--
+--insert into lecture values ('INFO212_S1DNS_2009', date '2009-03-02', date '2009-03-02', 'Introduction', null, 'intro', false);
+--insert into lecture values ('INFO212_S1DNS_2009', date '2009-03-02', date '2009-03-05', 'What is a DBMS?', null, 'RDBMS', false);
+--insert into lecture values ('INFO212_S1DNS_2009', date '2009-03-09', date '2009-03-09', 'Functions of a DBMS', null, 'RDBMS', false);
+--insert into lecture values ('INFO212_S1DNS_2009', date '2009-03-09', date '2009-03-12', 'The relational model', null, 'RDBMS', false);
+--
+--insert into other_class values ('INFO212_S1DNS_2009', date '2009-03-09', 'laboratory', 'Introduction (Oracle, TOAD)', 'http://info-nts-12.otago.ac.nz/info212/Labs/lab01/lab01-questions.html');
+--insert into other_class values ('INFO212_S1DNS_2009', date '2009-03-09', 'tutorial', 'Database management systems', 'http://info-nts-12.otago.ac.nz/info212/Tutorials/tut01/tut01-questions.html');
+--
+--insert into reading values ('INFO212_S1DNS_2009', date '2009-03-02', 'Text Chs. 1 & 2');
+--insert into reading values ('INFO212_S1DNS_2009', date '2009-03-09', 'Text �3.1�3.2');
+--
+--insert into assessment values ('INFO212_S1DNS_2009', date '2009-03-30', timestamp '2009-04-01 17:00:00', 'Assignment 1', 'http://info-nts-12.otago.ac.nz/info212/assessment/Assignment1.html');