diff --git a/src/db.h b/src/db.h
index 8f0dc15..b48731a 100644
--- a/src/db.h
+++ b/src/db.h
@@ -4,3 +4,7 @@
 #include "planner.h"
 
 #endif
+
+extern void init_db(sqlite3 *db);
+extern void save_node_to_db(sqlite3 *db, Node *node);
+extern void save_linked_list_to_db(sqlite3* db, Node* head);
\ No newline at end of file