I have tried installing this. After creating database, how to add data in it? As I am not showing any button or else to insert, delete, update, view data options, etc.
After the database has been created, use the tree menus on the left and right click on them. You can right click each folder and based on the folder's name you can add the necessary data. As you can see in the image below, I have created a test table where the data can be added successfully.