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- Newsgroups: comp.sys.mac.databases
- Path: sparky!uunet!gumby!destroyer!ncar!niwot.scd.ucar.edu!charlesa
- From: charlesa@niwot.scd.ucar.edu (Charles Albrecht)
- Subject: Re: Deleting Fields in 4D
- Message-ID: <1992Aug19.221533.13756@ncar.ucar.edu>
- Sender: news@ncar.ucar.edu (USENET Maintenance)
- Organization: Scientific Computing Divison/NCAR Boulder, CO
- References: <14183@gazette.bcm.tmc.edu>
- Date: Wed, 19 Aug 1992 22:15:33 GMT
- Lines: 35
-
- In article <14183@gazette.bcm.tmc.edu> ckeller@mbcr.bcm.tmc.edu (Charles Keller) writes:
- >
- >Once in the structure design mode, how do you eliminate a field?
- >
- >Charles Keller
- >[ckeller@mbcr.bcm.tmc.edu]
- >
-
- Aha, you've discovered one of the interesting things about 4D. You can't.
- Someone was explaining this recently and there is supposedly a reason for it.
- In FileMaker, for instance, if you try to delete a field that's used in a
- calculation field, it won't let you do it. 4D's procedures can get a whole lot
- more complicated, and since the procedures use pointers (of sorts) to the
- structure, you could get into big trouble when a long lost procedure needs
- to get the field you just deleted.
-
- Apparently there's a flag you can turn off (or on) with ResEdit that will
- allow you to delete fields, but I haven't tried to find it. I just call
- the empty field "Reserved" and set it to Alpha-2 or boolean.
-
- I'm not sure agree with Aci's reasoning on the matter, but I guess verison
- 1 or beta of 4D allowed field deletion and it caused so many problems they
- took it out.
-
- Charles
-
- ---
- Charles Albrecht "Nonsense, they only say you can't survive
- charlesa@ncar.ucar.edu The Fire Swamp because no one ever has."
- 303/497-1828 - Westley, The Dread Pirate Roberts
-
- NCAR - Scientific Computing Division * P.O. Box 3000 * Boulder, Colorado 80307
-
- The opinions you are about to have read are fictitious...
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