Database Administration (MOSC)

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Index varchar v.s. varchar2

edited Jan 14, 2009 2:57PM in Database Administration (MOSC) 1 commentAnswered
Hi all, got a couple of questions.

1. It is a little confusing about varchar datatype. It is said that it should not be used. This because of future changes in varchar datatype. Is there any other reasons not to?

2. What about creating a index on varchar or varchar2 column. is it less "good"/ not recommended? Especially when the data could be quite long/large, up to 1024 characters long.

3. Anyone who have a nice way to calculate future size on indexes, for different kind of datatypes.

Thanx

/A

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