data types

I would appreciate suggestions on the following:

-What is data type number(38) and number(32) what type of data are they good for.
How many bytes do they take to store data. What range of data can they take.

• Are smallint , int valid data types in Oracle
• To store data that may not go above 32000 what data type would you recommend

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Naushi Hussain                    Naushi.Hussain_at_alliedsignal.com