All were around at that time as was Filemaker... I set up a shop using Filemaker circa '89. Here's a history of FoxPro and Filemaker...
[link|http://www.foxprohistory.org/foxprotimeline.htm|http://www.foxprohis...oxprotimeline.htm]
[link|http://www.hposoft.com/Database/4D/4D%20Stuff/4DLS/part1/p1_ii.html|http://www.hposoft.c.../part1/p1_ii.html]
Can't say for sure which it was, but most small businesses were using 4D or Foxpro in the timeline you mentioned...
Dan