SQL
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Ted Codd in the early 1970s. This version, initially called "SEQUEL" ("Structured English Query Language"), was designed to manipulate and retrieve data stored in IBM's original quasi-relational database management system, System R, which a group at IBM San Jose Research Laboratory had developed during the 1970s.
Vinzant Software
As client–server computing was first getting started in 1988, Vinzant, Inc. worked with Microsoft and Novell. Vinzant developed SQLFile, the first shipping front end for the Ashton-Tate/Microsoft SQL Server in 1989. SQLFile was expanded to include support for DOS, OS/2 and Windows. It was a flexible development tool that created screens and reports that accessed data stored in Microsoft SQL Server, NetWare SQL and Oracle Server.