Optimizing query time w/lots of cols? 
Author Message
 Optimizing query time w/lots of cols?

Dbase5 can have 1024 columns, delphi and Paradox for Windows do not
necessarily imply Paradox table format only.

Sun, 30 Aug 1998 03:00:00 GMT  
 Optimizing query time w/lots of cols?
Our data is in an ascii flat file and is now getting too big (long
access times). Also, I want to start using a "real" database as part
of a move from a desktop to a network environment.

 I'm looking for advice on what database and what scheme to use.

I'm trying Paradox now, but have run into a limit of 255 fields. We
can have up to 2048 and 4096 bytes/record.  At 255 fields and 10,000
records the flat file access is still faster.

Does anybody have a feel for how access times would be if the data
where put into multiply tables of say 10 fields each and a TQuery was
used? A normal scenario would be to access 5-10 fields in 2-3 tables
and have the tables joined on a recnum field. Also, the data would be
read only at this point.


Sun, 30 Aug 1998 03:00:00 GMT  
 [ 2 post ] 

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