Thank you,I understand the situation much more clearly now.
> From: [email protected] > Date: Tue, 28 Apr 2015 08:28:39 -0400 > To: [email protected] > Subject: Re: [Jprogramming] I feel stupid for asking this... > > Jd is a replacement for the old JDB, which is no longer supported. > > As Marshall points out, documentation and tutorials are included with the > addon. Also, wiki and website pages are being prepared. > > On 27 April 2015 at 23:03, Marshall Lochbaum <[email protected]> wrote: > > > JD offers a few datatypes such as date/time types and shaped columns > > (whose elements are arrays) that JDB does not have. It also has a more > > powerful system for references between tables. If JDB suits your needs > > there is no strong reason to move to JD, but the two, though similar, > > are not compatible. > > > > The JD package comes with its own documentation and tutorials, but there > > should definitely be a guide to getting started on the J wiki. > > > > Marshall > > > > On Tue, Apr 28, 2015 at 01:24:55AM +0100, Jon Hough wrote: > > > Devon, Marshall, thanks. So am I right in thinking JDB and JD have more > > or less the same functionality, and use the same datatypes and whatnot?I > > don't feel the need to use JD, since I'm actually just going through the > > JDB tutorial (well, the wiki examples). > > > It is strange how little information there is about JD. > > > Regards,Jon > > > > Date: Mon, 27 Apr 2015 17:29:42 -0400 > > > > From: [email protected] > > > > To: [email protected] > > > > Subject: Re: [Jprogramming] I feel stupid for asking this... > > > > > > > > To be clear, JD is also free for non-commercial use. Just download the > > > > data/jd addon and run (load 'jd'), which will print instructions on how > > > > to request a key via email. > > > > > > > > Marshall > > > > > > > > On Mon, Apr 27, 2015 at 11:55:19AM -0400, Devon McCormick wrote: > > > > > No, it's just confusing if you don't know the history. Even then, I > > had to > > > > > look up some things to be sure. Anyway, JDB is the early version of > > a > > > > > J-based database system - now freely available - whereas JD is a > > newer > > > > > version intended to be a commercial product. > > > > > > > > > > On Mon, Apr 27, 2015 at 10:39 AM, Jon Hough <[email protected]> > > wrote: > > > > > > > > > > > I was playing around with JDB today, for the first time, never > > having even > > > > > > much looked at its documentation before. I was happily going > > through the > > > > > > examples and I browsed through the database forum when I noticed > > something. > > > > > > > > > > > > Everyone in the database forum, even the database forum's tagline, > > refer > > > > > > to something called jd, which is appsrently J's database. Then I > > looked at > > > > > > the wiki and all I found were references to JDB. Are they the same > > thing? > > > > > > > > > > > > I am afraid the answer will be "you are such an idiot of course > > they are > > > > > > the same!", but I genuinely am confused. They have different names. > > > > > > > > ---------------------------------------------------------------------- > > > > > > For information about J forums see > > http://www.jsoftware.com/forums.htm > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > Devon McCormick, CFA > > > > > > > ---------------------------------------------------------------------- > > > > > For information about J forums see > > http://www.jsoftware.com/forums.htm > > > > ---------------------------------------------------------------------- > > > > For information about J forums see http://www.jsoftware.com/forums.htm > > > > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
