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1.view ÏÞÖÆ
create or replace view my_view01
as select * from emp
with check option
/
2.synonym ͬÒå´Ê
create synonym dept for scott.dept;
select * from dept;
3.sysdba ¹«¹²
drop synonym dept;
create public synonym dept for scott.dept;
desc dba_synonyms
4.sequence ÐòÁÐ
create sequence myseq
start with 1
increment by 1
order
nocycle;
select myseq.nextval from dual;
select myseq.currval from dual;
5.
desc dba_sequences
select sequence_name, sequence_owner from dba_sequences;