added backend implementation

backend/dbConfig.js

@@ -0,0 +1,12 @@
+//import mariadb
+import mariadb from "mariadb";
+
+const ownConn = await mariadb.createConnection({
+    host: '127.0.0.1',
+    port: 3306,
+    user: 'tueitapp',
+    password: 'R}nt.>V~zyU!4SY$kE-p',
+    database: 'tueitapp',
+});
+
+export default ownConn;