Use the Length edit box to define the precision (total number of digits) of the field and use Scale edit box to define the scale (number of digits to the right of the decimal point) for numeric column.
Note: Be careful when shortening the field length as it might result in data loss.
How scale factors affect numeric data storage:
Input Data | Specified As | Stored As |
7,456,123.89 | NUMBER | 7456123.89 |
7,456,123.89 | NUMBER(*,1) | 7456123.9 |
7,456,123.89 | NUMBER(9) | 7456124 |
7,456,123.89 | NUMBER(9,2) | 7456123.89 |
7,456,123.89 | NUMBER(9,1) | 7456123.9 |
7,456,123.89 | NUMBER(6) | not accepted, exceeds precision |
7,456,123.89 | NUMBER(7,-2) | 7456100 |