I would like some help to identify as to why and from where the following query is getting executed on its own at particular intervals.   We have Thick Client Application written using Delphi and Firebird (2.5.2).  The query is:

Select F.RDB$COMPUTED_BLR, F.RDB$DEFAULT_VALUE, R.RDB$FIELD_NAME from RDB$RELATION_FIELDS R, RDB$FIELDS F where R.RDB$RELATION_NAME = ? and R.RDB$FIELD_SOURCE = F.RDB$FIELD_NAME and ((not F.RDB$COMPUTED_BLR is NULL) or      (not F.RDB$DEFAULT_VALUE is NULL)).

How can I make this execution stop as its causing me performance issues.

Looking forward to your support