Naming Convention fix in Topic

Changed Topic.id to Topic.ID

Create_DB.sql

@@ -15,7 +15,7 @@ CREATE TABLE IF NOT EXISTS Artist (
 );
 
 CREATE TABLE IF NOT EXISTS Topic (  -- as of yet unimplemented, see Art_Topic
-    id INTEGER PRIMARY KEY generated always as identity,
+    ID INTEGER PRIMARY KEY generated always as identity,
     name CHAR(20) UNIQUE NOT NULL,
     description VARCHAR
 );