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9.1

Oracle number precision

Asked by thrulogic in Oracle CRM, Oracle Database, Databases Miscellaneous

We are building a new Oracle database, and are thinking of staadardizing our (many) numeric columns to one of three precisions:

number(10)   counters, static / reference table ids (surrogate key)
number(20,2)  monetry values (of any currency)
number(20,10)  fractional values (such as fx rates etc)

The intention is to give a pragmatic balance between storage, performacne and ease/extensibility of development..

Is this a good idea or is it better practice  to tailor every column's precision to what the upper maximum required may be?  What other implications are there on storage, perfomance, flexibility?

also (bonus question) could we improve this by considering the byte / adressible memory size boundaries?

Thanks..


 




which is best for:
1)accurancy
2)performacne
3)development - extensibility
[+][-]02/07/09 06:38 AM, ID: 23578386Accepted Solution

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