There's a little-known link between Informix and DB2. Back in '86, DB2 lacked a mechanism to run ad hoc SQL from a file. They had SPUFI for terminal use but a

There's a little-known link between Informix and DB2. Back in '86, DB2 lacked a mechanism to run ad hoc SQL from a file. They had SPUFI for terminal use but apparently nothing you could just wrap in JCL and fire off. Informix developed a product called Batch/SPUFI to do exactly that, along with porting their Ace report writer to use on DB2. We got it working, but the company abandoned the entire mainframe product line soon thereafter.