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  • Subject: Re: Database partitioning
  • From: Sandeep Potnis <potnis@xxxxxxxxx>
  • Date: Wed, 26 Apr 2000 11:32:25 -0400 (EDT)

Alexei,

I understand that AS/400 has single level storage but I cannot control it. 
Besides Oracle type of partitioning makes it easy to purge uneeded data - you 
can just drop the partition and create a new one for new data. 

So -  I understand what single level storage is but I am looking for more 
control.

Thanks for your response 

Sandeep

------Original Message------
From: pytel@us.ibm.com
To: MIDRANGE-L@midrange.com
Sent: April 25, 2000 11:25:02 PM GMT
Subject: Re: Database partitioning


If you are talking about single system, then AS/400 database does not
require partitioning - data will be spread across all available drives
automatically.

If you have multiple systems in mind, you can do it on AS/400 (partition
single table over several AS/400 systems).
This is supported by OS/400 option 27 - DB2 MultiSystem.

    Alexei Pytel


Sandeep Potnis <potnis@india.com> on 04/25/2000 01:28:29 PM

Please respond to MIDRANGE-L@midrange.com

To:   MIDRANGE-L@midrange.com
cc:
Subject:  Database partitioning




Hello Everyone,

We are in the process of creating a Data warehouse on an 8-way 650 with
V4R4.

The potential table sizes are too big and we need to partition the tables
for performance improvement.

Oracle has a partition clause in the create table command as shown below:

CREATE TABLE stock_xactions
   (stock_symbol CHAR(5),
    stock_series CHAR(1),
    num_shares NUMBER(10),
    price NUMBER(5,2),
    trade_date DATE)
STORAGE (INITIAL 100K NEXT 50K) LOGGING
PARTITION BY RANGE (trade_date)
  (PARTITION sx1992 VALUES LESS THAN (TO_DATE('01-JAN-1993','DD-MON-YYYY'))
     TABLESPACE ts0 NOLOGGING,
   PARTITION sx1993 VALUES LESS THAN (TO_DATE('01-JAN-1994','DD-MON-YYYY'))
     TABLESPACE ts1,
   PARTITION sx1994 VALUES LESS THAN (TO_DATE('01-JAN-1995','DD-MON-YYYY'))
     TABLESPACE ts2);




Does UDB have something similar to this ? If not any suggestions with
regard to dB partitioning on the same system are greatly appreciated.

Thanks

Sandeep Potnis
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