Wikipedia
VP-Info
VP-Info is a database language & compiler for the personal computer. VP-Info was a competitor to the Clipper and dBase applications in the late 1980s and 1990s. VP-Info runs on MS-DOS, DR-DOS and the PC-MOS/386 operating system. It can be run on modern computers using an emulator such as dbDOS or vDOS. The last release of VP-Info was named Shark.