a judge problem,help!

[vicky2003]

Hi,
I'm a new Web page maker.I met a simple but boring question.
When I access data from database,I found if some fiels are null, it will throw a exception. Could anyone tell me:

1. how to judge if a number field in Oracle is null or not?
2. how to judge if a string field is null or not?

Tks,

 

[onpnt]

this is a database design issue. you may want to ask in the oracle forum. or the server side scripting platform that you are using forums

deffinetely not a javascript question

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[vicky2003]

thanks, will try