LtColRDSChauhan a couché sur son écran :

> Please help me migrate to Firebird 2.5.2 from Firebird 3.0.
>
> Thanks & Regards,
> Lt Col (Retd) Rajiv Dular Singh Chauhan

FBClone works very well for this
http://code.google.com/p/fbclone/downloads/list

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TetraSys

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