Make names unique

diff --git a/m_librarian/db.py b/m_librarian/db.py
index d63fd416406abe7b01d426189edfbf7e7d65d545..e02b95bcad56c13d033b52af576245877d3e9798 100755 (executable)
--- a/m_librarian/db.py
+++ b/m_librarian/db.py
@@ -38,7 +38,7 @@ sqlhub.processConnection = connectionForURI(db_uri)
 
 
 class Author(SQLObject):
-    name = UnicodeCol()
+    name = UnicodeCol(unique=True)
     count = IntCol()
 
 
@@ -58,18 +58,18 @@ class Book(SQLObject):
 
 
 class Extension(SQLObject):
-    name = StringCol()
+    name = StringCol(unique=True)
     count = IntCol()
 
 
 class Genre(SQLObject):
-    name = StringCol()
+    name = StringCol(unique=True)
     title = UnicodeCol()
     count = IntCol()
 
 
 class Language(SQLObject):
-    name = StringCol()
+    name = StringCol(unique=True)
     count = IntCol()