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CHAR(length): Oracle DBMS fixed-length character string. Typically used for string columns which are less than 20 characters in length. Always used for string columns that are indexed, regardless of length. length denotes the maximum number of characters the string can contain.

DATE: Oracle DBMS date and time. Contains century, year, month, day, hour, minute, and second information. LeasePak uses only the date portion (century, year, month, day). It does not use the time portion (hour, minute, second). If the datatype of a column is DATE, the column name begins with 'd_'.

NUMBER(15,scale): Oracle DBMS floating-point number. Used to store percentages, rates, and dollar amounts. scale denotes the maximum number of digits to the right of the decimal point. The maximum number of digits to the left of the decimal point is 15 minus the scale.