diff --git a/data/bulks.sql b/data/bulks.sql
index 2d9aa31..1debf5b 100644
--- a/data/bulks.sql
+++ b/data/bulks.sql
@@ -6,17 +6,40 @@ PRAGMA foreign_keys = ON; -- database requires foreign key checking to be turned
                           -- on PER CONNECTION
 INSERT INTO bulks (
   bulk_id,
-  sources_id,
-  sources_pages,
   short_name,
   long_name,
   numerical)
 VALUES
-  (1, 1, '271-72', '-', 'Negligible', 0.0),
-  (2, 1, '271-72', 'L', 'Light', 0.1),
-  (3, 1, '271-72', '1', 'One', 1.0),
-  (4, 1, '271-72', '2', 'Two', 2.0),
-  (5, 1, '271-72', '3', 'Three', 3.0),
-  (6, 1, '271-72', '4', 'Four', 4.0),
-  (7, 1, '271-72', '5', 'Five', 5.0);
+  (1, 1, '-', 'Negligible', 0.0),
+  (2, 1, 'L', 'Light', 0.1),
+  (3, 1, '1', 'One', 1.0),
+  (4, 1, '2', 'Two', 2.0),
+  (5, 1, '3', 'Three', 3.0),
+  (6, 1, '4', 'Four', 4.0),
+  (7, 1, '5', 'Five', 5.0);
 
+INSERT INTO sourceentries (
+   sourceentry_id
+  ,sources_id
+  ,page_start
+  ,page_stop
+)
+VALUES
+  -- 800 to 899 is reserved for bulks --
+  (800, 1, 271, 272) -- '-', L, 1, 2, 3, 4, 5 --
+;
+
+INSERT INTO bulks_sourceentries (
+   id
+  ,bulk_id
+  ,sourceentry_id
+)
+VALUES
+   (1, 1, 800) -- '-' --
+  ,(2, 2, 800) -- L --
+  ,(3, 3, 800) -- 1 --
+  ,(4, 4, 800) -- 2 --
+  ,(5, 5, 800) -- 3 --
+  ,(6, 6, 800) -- 4 --
+  ,(7, 7, 800) -- 5 --
+;
\ No newline at end of file
diff --git a/schema/bulks.sql b/schema/bulks.sql
index 565db03..df60759 100644
--- a/schema/bulks.sql
+++ b/schema/bulks.sql
@@ -1,10 +1,17 @@
 CREATE TABLE bulks (
 	bulk_id INTEGER PRIMARY KEY,
-  sources_id INTEGER NOT NULL,
-  sources_pages TEXT NOT NULL,
 	short_name TEXT NOT NULL,
 	long_name TEXT NOT NULL,
 	numerical FLOAT NOT NULL,
   FOREIGN KEY (sources_id) REFERENCES sources(sources_id)
 );
 
+-- Joining table --
+CREATE TABLE bulks_sourceentries (
+	 id INTEGER PRIMARY KEY
+  ,bulk_id INTEGER NOT NULL
+  ,sourceentry_id INTEGER NOT NULL
+  ,UNIQUE (id, bulk_id, soruceentry_id),
+  ,FOREIGN KEY (bulk_id) REFERENCES bulks(bulk_id)
+  ,FOREIGN KEY (sourceentry_id) REFERENCES sourceentries(sourceentry_id)
+);
\ No newline at end of file