[Koha] database error

[etaisil ineseliam]

I have installed koha using instance name library, but when i try to browse
to its IP it shows this

It works!

This is the default web page for this server.

The web server software is running but no content has been added, yet.

and when I look at the database, the my library instance does not have any
tables in it. Please can you show me what Im doing wrong here! thanks in
advance.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| koha_library       |
| koha_library1      |
| mysql              |
| performance_schema |
+--------------------+
5 rows in set (0.00 sec)

mysql> use koha_library;
Database changed
mysql> show tables;
Empty set (0.00 sec)