About the problem of the data of discrepancy of a certain watch to the middle of Oracle

Use C#1.1 to express Ic_general_h to the inventory in Oracle database " bill date Dbilldatechar (10) , sectional IDcdptidchar(20) , " amount "

Decimal(20, 8) ) a method that inserts a data (parameter is worth for 3 insertion fields) how to write? Basically be data won't handle on the format, thank everybody to help ~~