Web app : Best technology to develope an interface for a database?

I am new to web development;

I am trying to develop some web application to view data and do insert and delete on a little database including two tables. I use Node.js for my server.

Currently, the data is saved in two XML files. I do my operations(insert,delete,...) by changing the XML at clientside and sending the XML over to server to be saved.

However, I guess this is the hard and native way and there should be some library or some technology to help, because this is such a common scenario. I also think that using some database rather than XML may help, though the database management utilities are not much needed really.

Note: I don't browse all the data directly from database. the database includes path of some images which are loaded for the user to be viewed.

Any idea is appreciated. Thanks.