You could write code and check each field in each table checking for type. I think field type 7 is a link to a sub table. If desired some ok me in my company can do this part for you as well as the code to unlink and update the data. I have done this before. I might even do this part in 12. Regards
Chuck On Fri, Apr 24, 2020 at 6:38 PM Kenneth Geiger via 4D_Tech < 4d_tech@lists.4d.com> wrote: > Hi Chuck, > > Thanks! I totally agree with you and was anticipating these changes. I > have just one really dumb question… In all my years using 4D, I have NEVER > used a sub-table. Just how would I recognize if this structure includes and > sub-tables? > > Regards, > > Ken > > > On Apr 24, 2020, at 4:12 PM, Chuck Miller via 4D_Tech < > 4d_tech@lists.4d.com> wrote: > > > > First, I would not use windows 7 at all. I would move to windows 10 > > > > Second here are some potential ares of concern that you will need to > deal with > > > > 1. Are there any sub-tables. If so I would recommend creating new tables > and moving data in v 15 > > > > 2. There are probably obsolete pictures in the db. You can use JPRs > component in 16 (32 bit mode) > > > > 3. I would also not use the built in primary key stuff, but would add a > UUID to each table and table that the primary key. I have previously > posted code I have used to create these. You need to create these with an > empty data file. When you open an existing data file, all of these keys > should be populated automatically. If not I have code that will check and > make sure that all records have UUIDs. > > > > 4. I would also run tools on structure air each in 12 and then at each > step up to a newer version > > > > > > > > Others may tell you that you can use an existing unique key in a table > for this. I would not, as these are used only for journaling. I would not > want to make a UUID key on a one table that was used in a many table as the > link. I would keep all my other long ints for that. > > > > Regards > > > > Chuck > > > ------------------------------------------------------------------------------------------------ > > Chuck Miller Voice: (617) 739-0306 > > Informed Solutions, Inc. Fax: (617) 232-1064 > > mailto:cjmiller<AT SIGN>informed-solutions.com < > http://informed-solutions.com/> > > Brookline, MA 02446 USA Registered 4D Developer > > Providers of 4D and Sybase connectivity > > http://www.informed-solutions.com < > http://www.informed-solutions.com/> > > > ------------------------------------------------------------------------------------------------ > > This message and any attached documents contain information which may be > confidential, subject to privilege or exempt from disclosure under > applicable law. These materials are intended only for the use of the > intended recipient. If you are not the intended recipient of this > transmission, you are hereby notified that any distribution, disclosure, > printing, copying, storage, modification or the taking of any action in > reliance upon this transmission is strictly prohibited. Delivery of this > message to any person other than the intended recipient shall not > compromise or waive such confidentiality, privilege or exemption from > disclosure as to this communication. > > > >> On Apr 24, 2020, at 5:16 PM, Kenneth Geiger via 4D_Tech < > 4d_tech@lists.4d.com> wrote: > >> > >> Hi all, > >> > >> I’m solicitating your opinions. > >> > >> I’ve picked-up a new 4D client. They have an existing 4D system (v12 > running on Win7) that has been stagnant for quite e few years. I believe it > was originally written under 2004 or maybe even 6.8.5. They’re looking to > replace their computers with Win10 machines and and upgrade 4D. I’m a Mac > guy and I do my Win development in a VMWare environment. I’ve got several > configurations available. I’ve got a Win7 environment that has a 4D v14 > installation and a Win10 environment with 4D v15, v16, and v17 > installations. My thought is to skip v14 and open the v12 system under v15, > take care of what needs to be updated, and then move it to v17. Your > thoughts would be most appreciated. > >> > >> Stay safe and healthy, > > > > ********************************************************************** > > 4D Internet Users Group (4D iNUG) > > Archive: http://lists.4d.com/archives.html < > http://lists.4d.com/archives.html> > > Options: https://lists.4d.com/mailman/options/4d_tech < > https://lists.4d.com/mailman/options/4d_tech> > > Unsub: mailto:4d_tech-unsubscr...@lists.4d.com <mailto: > 4d_tech-unsubscr...@lists.4d.com> > > ********************************************************************** > > ********************************************************************** > 4D Internet Users Group (4D iNUG) > Archive: http://lists.4d.com/archives.html > Options: https://lists.4d.com/mailman/options/4d_tech > Unsub: mailto:4d_tech-unsubscr...@lists.4d.com > ********************************************************************** -- ----------------------------------------------------------------------------------------- Chuck Miller Voice: (617) 739-0306 Fax: (617) 232-1064 Informed Solutions, Inc. 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