Path: utzoo!attcan!uunet!munnari.oz.au!metro!news From: objtch@extro.ucc.su.oz.au (Peter Goodall) Newsgroups: comp.lang.smalltalk Subject: Re: OODB for Smalltalk V ? Message-ID: Date: 10 Dec 90 23:14:09 GMT References: <90343.105103MUHRTH@DB0TUI11.BITNET> Sender: news@metro.ucc.su.OZ.AU (news) Organization: Uni Computing Service, Uni of Sydney, Australia Lines: 47 Nntp-Posting-Host: extro.ucc.su.oz.au MUHRTH@tubvm.cs.tu-berlin.de (Thomas Muhr) writes: >As applications become serious, internal memory is getting a bit tight. >Are there OODB add-ons available for Smalltalk V/286...? Anything within >the range of virtual objects residing transparently on disk, appearing >like normal image-objects from the applications view, to full-featured >OODBs with concurrency control, standardized DDL and query languages, >integrity checking, transaction based processing, etc.. would be very >interesting. Any pointer to public domain or commercial products would >be highly appreciated. >Thank you very much - >Thomas >------- >Thomas Muhr, Technical University of Berlin, BITNET: muhrth@db0tui11 > Project ATLAS - Computer Based Tools for Qualitative Research > "Computers, like every technology, are a vehicle > for the transformation of tradition." (WINOGRAD/FLORES) I had the pleasure of talking to Jeff McKenna at the Pacific Tools'90 conference in Sydney recently. He suggested that the personal OODB was a market niche which needed filling. Gemstone from ServioLogic seems to be the best fit for Smalltalk, and would be a good model for the Personal OODB. The problem is that you require a SUN or VAX as a server. There are clinet interfaces for /V286 /VMAC and Smaltalk-80. I think that a version using an OS/2 server would solve a lot of problems for us Smalltalkers. I am interested in using it to solve the concurrency problems we encounter when trying to get 20 -30 /V286,VPM users to share data on a network. Jacob Stein also gave a talk at Tools'90. The undercurrent of which seemed to be that the great difficulty in preserving integrity was having to provide an interface to C++, C etc which don't preserve referential integrity as an intrinsic propety of the language. Why not a Gemstone with only a Smalltalk interface for PM!!!! ---------------------------- Peter Goodall Smalltalk Systems Consultant ObjecTech P/L 162 Burns Bay Rd, LANE COVE , NSW, AUSTRALIA objtch@extro.ucc.su.oz.au