At 11:17 AM 10/21/2002 -0300, Carlos Alberto Lima dos Santos wrote:

> Due to amount of the data that will be recorded in a database,
>created an algorithm to compress those data before include in the database.
>For treating of a numeric string, I transform that string in Hexadecimal,
>later I get the character corresponding of each two numbers in order to
>generate the compressed string

What you should do is define a new blob subtype - negative byte values
are pretty much safe - for the compressed type. Were it up to me, I'd
then define a blob filter that translates to and from the compressed
type.

Regards,

Ann
www.ibphoenix.com
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