"Terminal" will do. These were text user interface (TUI) based browsers accessing a remote database, before web browsers appeared (or even the web itself). Fixed, very limited feature set, talking to database over plain LAN, a dedicated phone line or similar.

Possibly not even that: just a dumb terminal sending keystrokes & displaying text returned by the server.

Setups like this have been around almost as long as computers exist.

I recall that these replaced library catalogs in the form of drawers full of cards. Each card representing a book located elsewhere in the library (or available upon request from a central location). Man I'm old...