Bug fixing

src/database.hpp

@@ -12,8 +12,7 @@ namespace simple_object_storage {
 class dbEntry {
     public:
         std::string hash; // unique primary key
-        std::vector<std::string> labels; // multiple labels
-        std::vector<std::string> tags; // multiple tags
+        std::vector<std::string> label_tags; // multiple label:tag pairs
         nlohmann::json metadata;
 };