RE: Does anyone read the e-mails from [mailto:db2@news.db2mag.com]
> Date: Fri, 1 Aug 2008 15:40:51 +0100> Subject: Re: Does anyone read the e-mails from [mailto:db2@news.db2mag.com]> From: obnoxio@serendipita.com> To: im_gumby@hotmail.com> CC: informix-list@iiug.org> > > Ian Michael Gumby said:> > > BTW, Here's a tech tip you won't see on OTC's website. If you want to> > reverse engineer IDS's disk layout, you create a small chuck. Populate> > it with a known set of data of a known size. Take down the engine and> > use dd and od to look at the page layout. ;-)> > Gosh, I've been doing that for years. Did you only discover that now?> Nope. Its how I reversed engineered some things to figure out how Informix worked. ;-) Its just an old trick. I just decided to share it with this newer generation. But I don't know if they're still proficient in C to really take advantage of this. _________________________________________________________________ Keep your kids safer online with Windows Live Family Safety. http://www.windowslive.com/family_safety/overview.html?ocid=TXT_TAGLM_WL_family_safety_072008
Ian Michael Gumby wrote: > > > > Date: Fri, 1 Aug 2008 15:40:51 +0100 > > Subject: Re: Does anyone read the e-mails from > [mailto:db2@news.db2mag.com] > > From: obnoxio@serendipita.com > > To: im_gumby@hotmail.com > > CC: informix-list@iiug.org > > > > > > Ian Michael Gumby said: > > > > > BTW, Here's a tech tip you won't see on OTC's website. If you want to > > > reverse engineer IDS's disk layout, you create a small chuck. Populate > > > it with a known set of data of a known size. Take down the engine and > > > use dd and od to look at the page layout. ;-) > > > > Gosh, I've been doing that for years. Did you only discover that now? > > > Nope. > > Its how I reversed engineered some things to figure out how Informix > worked. ;-) > Its just an old trick. > > I just decided to share it with this newer generation. But I don't know > if they're still proficient in C to really take advantage of this. Speaking only for myself. If I'm paying for a DBMS in 2008 I rather expect that it shouldn't be necessary for me to reverse engineer it's disk layout. YMMV. I'm pretty sure that, if forced to, I could read bytes from a raw partition using a programming language other than C. In other words, proficiency in C is not a necessary prerequisite. Just my '0.02 worth. -- RGB
> Date: Fri, 1 Aug 2008 17:40:27 +0100 > From: RedGrittyBrick@SpamWeary.foo > Subject: Re: Does anyone read the e-mails from [mailto:db2@news.db2mag.com] > To: informix-list@iiug.org > [SNIP] > > > > I just decided to share it with this newer generation. But I don't know > > if they're still proficient in C to really take advantage of this. > > Speaking only for myself. If I'm paying for a DBMS in 2008 I rather > expect that it shouldn't be necessary for me to reverse engineer it's > disk layout. YMMV. > > I'm pretty sure that, if forced to, I could read bytes from a raw > partition using a programming language other than C. In other words, > proficiency in C is not a necessary prerequisite. > > Just my ¤0.02 worth. > First, even in 2008, not everything is going to be documented for a proprietary product. Second, you can use *other* languages. C is just the easiest and most efficient in hacking things. _________________________________________________________________ With Windows Live for mobile, your contacts travel with you. http://www.windowslive.com/mobile/overview.html?ocid=TXT_TAGLM_WL_mobile_072008