drop table test89_pks_person
/
drop table test89_pks_employee
/
drop table test89_pks_payroll
/
drop table test89_pks_project
/
drop table test89_pks_address
/
drop table test89_pks_category_contract
/
drop table test89_pks_contract
/
drop table test89_pks_category
/
