Sql知識點總結

1、數據庫對象：表(table) 視圖(view) 序列(sequence) 索引(index) 同義詞(synonym)html 視圖(view) : 存儲起來的 select 語句android create view emp_vu5 as select employee_id, last_name, salary from employees where department_id = 90

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