Generally it is bad practice to use columns in the primary key, which change.  They introduce many different problems.

 

"Do not criticize someone until you walked a mile in their shoes, that way when you criticize them, you are a mile a way and have their shoes."

Christopher R. Spence
Oracle DBA
Phone: (978) 322-5744
Fax:    (707) 885-2275

Fuelspot
73 Princeton Street
North, Chelmsford 01863
 

-----Original Message-----
From: Rao, Maheswara [mailto:[EMAIL PROTECTED]]
Sent
: Friday, September 21, 2001 12:35 PM
To: Multiple recipients of list ORACLE-L
Subject: Design Issue - Quick response appreciated

 

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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