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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.
NUMBER(10): Oracle DBMS integer number, maximum 10 digits. The standard datatype used for most integers.
TIMESTAMP(3): Oracle DBMS date and time. Contains century, year, month, day, hour, minute, second, and second fraction (accurate to 1/1000 second) information. LeasePak uses both the date and time portions. If the datatype of a column is TIMESTAMP(3), the column name begins with 'dt_'.
VARCHAR2(length): Oracle DBMS variable-length character string. Used for non-indexed strings over 19 characters in length. length denotes the maximum number of characters the string can contain.