UPD file extension

dBase Update File

File extension: .UPD - dBASE was the first widely used database application for microcomputers, published by Ashton-Tate for CP/M, and later on the Apple II, Apple Macintosh and IBM PC under DOS where it became one of the best-selling software titles for a number of years. dBASE was never able to transition successfully to Microsoft Windows and was eventually displaced by newer products like Paradox, Clipper, and FoxPro.