Hi Ales,

> can you, please, tell me, if adding column to system tables
> is allowed? In
> table RDB$RELATION_FIELDS is for example column
> RDB$DESCRIPTION. Can I add
> column DESCRIPTION2 BLOB?
> How can this impact the FB functionality or performance?

First of all, are you aware that you will lose your additional column after
your database is restored from a backup?


Dmitry