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全部博文（487）
发布时间：2019-10-15 10:03:24
Exammine the desciption of the PRODUCT DETALS table:--------------------------------------------------PRODUCT_NAME NOT NULL VARCHAR2(25)EXPIRY_DATE DATEA) PRODUCT_ID can be assigned the PEIMARY KEY constraint.C) EXPIRY_DATE contains the SYSDATE by defalt if no.........【阅读全文】
发布时间：2019-10-15 09:33:24
The CUSTOMERS table has a CUST_CREDT_LIMIT column of date type number.A) SELECT TO_CHAR(NVL(cust_credit_limit * .15,'Not Available')) FROM customers;C) SELECT NVL(cust_credit_limit * .15, 'Not Available') FROM customers;E) SELECT NVL2(cust_credit_limit,TO_CHAR(cust_credit_limit * .15),.........【阅读全文】
发布时间：2019-10-14 11:25:39
Which three are true about the CREATE TABLE command?B) The owner of the table should have space quota available on the tablespace where the table is defined.D) It implicitly rolls back any pending transactions.F) The owner of the table must have the UNLIMITED TABLESPACE system privileg.........【阅读全文】
发布时间：2019-10-14 10:24:31
Exanine the desciption of the EMPLOYEES table:----------------------------------------------------------EMP_NAME VARCHAR2 (40)SALARY NUMBER(8,2)Which query is valid?B) SELECT depe_id,join_date, SUM(salary) FROM employees GROUP BY dept_id:D) SELECT dept_ id,AVG (MAX (salary).........【阅读全文】
发布时间：2019-09-30 14:01:41
Which two actions must you take?B)Grant access to the Oracle software owner O/S account to all database administrators.D)Assign different O/S groups to the OSOPER and OSDBA credentials.Answer: CD题译：你已经决定实行最少权限和职责分离的原则。principle 原则。D 译：向 OSOPER 和 OS.........【阅读全文】
