I use D3, IBO3 and Firebird v. WI-T1.0.0.679

1. a TIBOQuery is defined as

'select * from tb_iva';

2. TB_IVA is defined as

SHOW TABLE tb_iva
COD_IVA VARCHAR(5) Not Null
ALIQ_IVA (D_PERC) NUMERIC(9, 3)
I_E VARCHAR(1) Not Null
DETR_NE SMALLINT Not Null
DES_IVA VARCHAR(20) Not Null
CONSTRAINT INTEG_42:
Primary key (COD_IVA)

3. a TDBDataSource is connected to the TIBOQuery

4. a TDBGrid is connected to the TDBDataSource

5. a TDBNavigator is connected to the same TDBDataSource

6. if I add a new record and set ALIQ_IVA to 0, some magics corrects my
input and set the same value to 0.208

Can somebody explain this ?

TIA

Duilio Foschi