> So that's the background, should I ask the vendor to add a COMMIT at
> strategic places in the patch script or am I ok as the reference to isql
> in the book implies all DDL executed against the database regardless of
> the tool used to connect and execute said statements?

Transactions in Firebird are completely controlled by client
application (such as isql). You cannot expect the same behaviour from
any other client application unless it was implemented following the
same rules.

SY, SD.