| Title: | DEC Rdb against the World |
| Moderator: | HERON::GODFRIND |
| Created: | Fri Jun 12 1987 |
| Last Modified: | Thu Feb 23 1995 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1348 |
| Total number of notes: | 5438 |
Martin Butler and Robin Bloor's recent Comparative Database performance on VAX report gives a very nice assessment of Rdb/VMS. However, it does cite several things that Rdb doesn't do. One of my customers is curious as to why we don't implement some of the features mentioned in this document. The features in question are: Variable table buffer size Variable number of buffers per table Inverted lists - ISAM - handled soon br RMS gateway compiled stored procedures multi-threaded server global buffers optimistic concurrency control pre-emptive b-tree splitting Would any of you noters/engineers care to comment on why we don't implement these features?
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 624.1 | starting with the first two... | CREDIT::WATSON | false glorious promises of spring | Thu Apr 26 1990 19:46 | 14 |
Hi Russ,
I'll do the easy ones...
We can't do the first two on the list as well as providing mixed areas,
one of the in points of which is to buffer in rows from different
tables at the same time.
Are theyan Rdb shop interested in engineering priorites, or are they
shopping around the vendors? If the latter, it would be interesting to
hear how the ohers are explaining why they don't implement things like
multifile, hashing, etc...
Andrew.
| |||||
| 624.2 | WIBBIN::NOYCE | Bill Noyce, FORTRAN/PARALLEL | Mon Apr 30 1990 19:36 | 8 | |
Most of these aren't "features" in the sense of something a user
can or can't do. Instead, they are intended to provide a certain
benefit -- mostly improved performance. Rdb/VMS has chosen other
means to provide the same benefit(s). In general, the developers
felt the features they implemented gave more performance improvement
for more applications than the features you've listed. Ask your
customer whether they think we've succeeded in meeting their
performance requirements.
| |||||