Article View: comp.os.msdos.programmer
Article #579dBase IV multiple index files?
From: Alexandre Pechtchanski
Date: Fri, 31 Jul 1992 20:34
Date: Fri, 31 Jul 1992 20:34
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1823 bytes
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Hi, everybody:
I've heard a statement that seems pretty doubtful to me:
"... With .MDX files, all indexes are updated automatically, with
only one DOS File Handle, instead of one DOS File Handle for each index.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This frees up RAM and ... to make program more efficient (read faster)."
^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^
I was always pretty sure that no matter what you do you have to allocate
one DOS file handle (either explicitly or implicitly) for each file you
access. For dBase it spells one handle for each .DBF + one for each
.NDX etc. The only way (IMHO) to circumvent it is to use one handle
for different files at different time, but it sure will lead to
_in_efficiency of program!
Can anybody confirm/disprove the above statement? (I mean the quoted
one, also all are welcome to spill flames on me for my apparent
stupidity ;-) )
Thanks in advance
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Alex Pechtchanski, GCRC System Manager voice: (212) 241-1804
Mount Sinai Medical Center, New York ΓΌ-------------------------
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Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!news.byu.edu!yvax.byu.edu!cunyvm!appms Newsgroups: comp.os.msdos.programmer,bit.listserv.dbase-l Subject: dBase IV multiple index files? Message-ID: <92213.163449APPMS@CUNYVM.BITNET> From: Alexandre Pechtchanski <APPMS@CUNYVM.BITNET> Date: Friday, 31 Jul 1992 16:34:49 EDT Organization: City University of New York/ University Computer Center Lines: 25