Designing a Web Interface

Good Morning:

I've set up a PostgreSQL database on my Red Hat Linux 7.3 box. I'm
trying to figure out how to put together a web page to administer
records in the database. I'd like my web site to behave in the manner of
a software application where the page itself is updated when I submit
changes, and I don't have to go to a new page to see the change, and
then click to get back to the main page.

From my experience with HTML, I understand I can use frames and a
target=<frame name> to make an html page appear in a particular frame.
From reading through PHP, in order to get it to work, you usually make
the .php page the target, and this leaves me in the strange position
that I can't direct where the output of the page should go.

I'm curious if someone has implemented this type of layout, or if any
has some pointers on where I might be able to do some further reading.
Any pointers to examples would also be really appreciated.

Thanks for your time.

- Michael