more on database

src/core/database.cpp

@@ -19,3 +19,13 @@ void Database::exec(const std::string& sql)
         throw std::runtime_error("Error in SQL execution.");
     }
 }
+
+void Database::beginTransaction()
+{
+    exec("BEGIN TRANSACTION");
+}
+
+void Database::endTransaction()
+{
+    exec("END TRANSACTION");
+}

src/core/database.h

@@ -15,6 +15,8 @@ public:
     void exec(const std::string& sql);
 private:
     sqlite3 *db;
+    void beginTransaction();
+    void endTransaction();
 };
 
 #endif // DATABASE_H