One thought is to have an additional column called something like
'PRIOR_ID'. If the Account_id is "changed" (actually a new value inserted)
then the PRIOR_ID for the new row is set to the ACCOUNT_ID of the old row.
That way you can always trace back if the transaction used to have a
different account.
Jay Miller
-----Original Message-----
Sent: Friday, September 21, 2001 12:35 PM
To: Multiple recipients of list ORACLE-L
List,
OLTP application with 24x7 requirement. 300,000 records per day are inserted
into the transaction table. Environment: Solari 7. Oracle 817.
The transaction table layout.
Security ID
Account ID
Account Type
Trade Date
And other columns in this table.
In the above table, the primary key is -- Security ID + Account ID + Account
Type + Trade Date
There are many to one relationships built to other child tables from
Transaction Table
Scenario:
User inserts a record into transaction table. In the first record, Account
ID value is "HP" and he might insert a record into the child table (Or this
transaction may not insert a record into a child table). After some time,
the user queries the original record with the primary key and then changes
the value in the column - Account ID to "IBM". Now, the original
transaction record is NOT UPDATED. A record IS INSERTED with the new
values. Also, he might or might not insert a record into a child table with
this new values of primary key.
Now the user would query the transaction table with Account ID = IBM. But,
the user wants to get all the previous records also; in this case, he want
to see the record with Account ID = "HP" also. Also, he want to see the
related records from the child tables.
I tried with the idea of sequence number generation but it was failing.
Any ideas or suggestions are much appreciated.
Thanks,
Rao
Maheswara Rao,
Oracle DBA
SunGard Securities
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Author: Miller, Jay
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