drop table employee;
drop table department;
drop table address;
drop table comp_key_employee;
drop table comp_key_department;
drop table comp_key_address;

-- supported
drop table integer_table;
drop table int_table;
drop table mediumint_table;
drop table int4_table;
drop table signed_table;
drop table double_table;
drop table double_precision_table;
drop table float_table;
drop table float4_table;
drop table float8_table;
drop table varchar_table;
drop table varchar_ignorecase_table;
drop table varchar2_table;
drop table nvarchar_table;
drop table nvarchar2_table;
drop table varchar_casesensitive_table;
drop table char_table;
drop table character_table;
drop table nchar_table;
drop table longvarchar_table;
drop table date_table;
drop table time_table;
drop table timestamp_table;
drop table datetime_table;
drop table smalldatetime_table;
drop table decimal_table;
drop table dec_table;
drop table numeric_table;
drop table number_table;
drop table boolean_table;
drop table bit_table;
drop table bool_table;
drop table tinyint_table;
drop table smallint_table;
drop table int2_table;
drop table year_table;
drop table bigint_table;
drop table int8_table;
drop table real_table;
drop table binary_table;
drop table varbinary_table;
drop table raw_table;
drop table bytea_table;
drop table longvarbinary_table;
drop table identity_table;
drop table blob_table;
drop table tinyblob_table;
drop table mediumblob_table;
drop table longblob_table;
drop table image_table;
drop table oid_table;
drop table clob_table;
drop table tinytext_table;
drop table text_table;
drop table mediumtext_table;
drop table longtext_table;
drop table ntext_table;
drop table nclob_table;
drop table テーブル;