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SQL> CREATE OR REPLACE TYPE empType AS OBJECT
2 (id VARCHAR2(10),
3 name VARCHAR2(20),
4 address VARCHAR2(35),
5 emp_type VARCHAR2(8)) NOT FINAL
6 /
Type created.
SQL>
SQL> CREATE TABLE emp OF empType
2 (id NOT NULL,
3 emp_type CHECK (emp_type in ('Designer', 'Worker', 'NULL')),
4 PRIMARY KEY (id));
Table created.
SQL>
SQL> CREATE OR REPLACE TYPE Designer_T UNDER empType
2 (annual_salary NUMBER)
3 /
Type created.
SQL>
SQL> CREATE OR REPLACE TYPE Worker_T UNDER empType
2 (weekly_wage NUMBER)
3 /
Type created.
SQL>
SQL>
SQL> drop table emp;
Table dropped.
SQL>
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