053-467

In a database with the database character set of US7ASCII and a national character set of UTF-8, which datatypes would be capable of storing Unicode data by default?
A. VARCHAR2
B. CHAR
C. NVARCHAR2
D. CLOB
E. LONG

　　NLS datatypes(NCHAR,NVARCHAR,and NCLOB) store data using the character set defined as the national character set by default.Because the national character set is UTF-8(a Unicode character set),data stored in these datatypes will be Unicode data by default.All other datatypes use the character set defined as the database character set.Because US7ASCII is not a Unicode character set,it does not store Unicode data by default.