In fields with data type VARCHAR2, alphanumeric text strings can be entered with a maximum number of characters as stated in ( ). In fields with data type NUMBER, only numerical characters can be entered with a maximum number of characters as stated in ( ). NUMBER(15,3) means that 15 digits can be entered in the field, of which 3 are decimals. NUMBER(2) means that figures between 0 and 99 will be accepted. See also section Input data in general below.