Re: A Normalization Question

From: Neo <neo55592_at_hotmail.com>
Date: 29 Jun 2004 10:41:09 -0700
Message-ID: <4b45d3ad.0406290941.1327f3cd_at_posting.google.com>


> Good to see that you're back. You haven't forgotten that you still owe me
> $1.000, have you?

RM Sol#1 and #2 fail to meet the challenge because, they contain redundant schema (schema is data) to store the class hierarchy which cannot be accessed by the provided report procedure, and stores redundant data (ie "brown"). Deficiencies in the genericness of the solutions can be shown by the inability to handle things without an attribute (ie name) and things with multiple attributes each of different type, etc.

Below are measurements made thus far using RM solutions that aren't as generic or normalized as XDb1's.

Small Report Generation Summary (provided by Hugo)



Solution Time(ms) Platform Notes
-------------- --------  ----------------- --------------------------
RM#1 SqlSrvr2K  14.3     1.3 Ghz PC        Unnormalized, non-generic
RM#2 SqlSrvr2K  11.0     1.3 Ghz PC        Unnormalized, non-generic
XDb1 4.4.7      16       1.3 Ghz PC        Debug ver, norm and gener


Small Report Generation Summary (provided by Neo)



Solution Time(ms) Platform Notes
-------------  --------  ----------------- --------------------------
RM#1 SqlSrvr7   65.0     500 Mhz Server    Unnormalized, non-generic
RM#2 SqlSrvr7   68.9     500 Mhz Server    Unnormalized, non-generic
XDb1 4.5.7       1.632   500 Mhz Server    Normalized, generic
XDb1 4.5.9       6.561   233 MHz PocketPC  Normalized, generic


Large Report (28,940 rows) Generation Summary (provided by Neo) 200 Goat Hierarchy (5 generations x 40 goats/generation, each goat having two parents, except 1st gen).



Solution Time(sec) Platform Notes
-------------  --------  ----------------- --------------------------
RM#5 SqlSrvr7   40.5     500 Mhz Server    Unnormalized, non-generic
XDb1 4.5.7       2.9     500 Mhz Server    Normalized, generic
XDb1 4.5.9      16.971   233 Mhz PocketPC  Normalized, generic


Larger Report (276,620 rows) Generation Summary (provided by Neo). 400 Goat Hierarchy (10 gen x 40 goats/gen),



Solution Time(ms) Platform Notes
-------------  --------  ----------------- --------------------------
RM#5 SqlSrvr7  105 min   500 Mhz Srvr, NT  Avg of 2 runs, UnNrm,UnGen
XDb1 4.5.10     44 min   500 Mhz Srvr, NT  Avg of 2 runs, Norm, gener
XDb1 4.5.10     57 min   450 Mhz PC, 98    1 run, Normalized, generic
XDb1 4.5.10 195 min 233 Mhz PocketPC 1 run, Normalized, generic

Note: SQL Server scripts are available from website. Received on Tue Jun 29 2004 - 19:41:09 CEST

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