is a text-based procedurally-oriented programming language
and DBMS, originally published by Fox Software and later
by Microsoft, for MS-DOS, MS Windows, Apple Macintosh, and
UNIX.Although FoxPro is a Database Management System (DBMS)
and it does support relationships between tables, it is
not considered a Relational Database Management System (RDBMS),
lacking transactional processing.The final published release
of FoxPro was 2.6, after which the name was changed to Visual
no longer sold or supported by Microsoft, there is still
an active worldwide community of FoxPro users and programmers.
FoxPro 2.6 for UNIX (FPU26) has even been successfully installed
on Linux and FreeBSD using the Intel Binary Compatibility
Standard (ibcs2) support library.
Versions by OS Version FP 2.0 FP 2.5 FP 2.6
MS-DOS Yes Yes Yes
Windows 3.1 to XP Yes Yes Yes
Macintosh No Yes Yes
SCO UNIX No No Yes
Linux & FreeBSD No No Yes
Windows 2000 No No Yes
2 was a major breakthrough, because of its "Rushmore"
optimizing engine, which consisted of using indexes to accelerate
data retrieval and updating. Rushmore technology examined
every data-related statement, and looked for filter expressions.
If one was used, it looked for an index matching the same
addition, FoxPro2 was originally built on WatCOM C++, which
had its own memory extensor - at that time state-of-the-art.
FoxPro2 could access expanded and extended memory, using
almost all available RAM (DOS). It used some interrupts
in absence of the extended memory driver: if no HIMEM.SYS
was loaded, FoxPro enabled that mechanism.