neal@mnopltd.UUCP (12/12/89)
In response: -- Our organisation is planning a development of an application -- using a relational DBMS. Our current system runs under SCO XENIX -- on 286 and 386 platforms. We plan to stick that platform, so -- SCO XENIX or later SCO UNIX 5.3 will be the OS our system will run under. -- Of course now comes the question about which RDBMS to use. We seem to -- have at least two, maybe three choices, since we want to use a well- -- known supplier. Oracle, Ingres and possibly Informix are the systems -- we consider. I would suggest that you also consider PROGRESS. They have been around for about 5 years, were the first to run on DOS, Unix, Xenix, VMS, Pick, etc all at the same time. They also seem to consistently win in DBMS programming competitions. They were also the first to do transaction scoping and recovery. We work with law firms a lot and it has really saved our bacon when they had a power outage or hardware failure during a big posting job. (and naturally they didn't have a backup...) Progress just backs out the changes like they never happened. With the other DBMS products we/they would have been dead meat. If you are planning a truly humunguous database, (50+ MB) then any DBMS which uses the native Unix file system will begin to smell bad. (due to the diddling with inodes that is endemic to unix; it just weren't made for BIG files...) UNIFY, which offers a RAW IO mode, can be given its own partition separate from the Unix file space. It organizes it in its own fiendish way for optimium performance. Sorry if this makes your selection more difficult than less. I am not real fond of the original three you noted, but momma says if you can't say something nice then don't.... I am not related to either the above companies. Neal Rhodes MNOP Ltd Lilburn (atlanta) GA 30247 (404)- 972-5430 uunet!emory!jdyx!mnopltd!neal Or uunet!gatech!stiatl!mnopltd!neal Disclaimer: I can say anything I want. Its my own damn company....