CSX*
CSX are the first three characters of SUPRA, a product of Cincom Systems, Incorporated. SUPRA is an advanced relational database management system designed for ease-of-use, flexibility and high-performance. You can use SUPRA with COBOL, FORTRAN, PL/I, Pascal, C, and Assembler.
Reference Sources
IPC Software Directory, International Computer Programs, Inc., September, 1991.