OCP-1Z0-051-V9.02-49题

49. The ORDERS table belongs to the user OE. OE has granted the SELECT privilege on the ORDERS
table to the user HR.
Which statement would create a synonym ORD so that HR can execute the following query successfully?
SELECT * FROM ord;
A. CREATE SYNONYM ord FOR orders; This command is issued by OE.
B. CREATE PUBLIC SYNONYM ord FOR orders; This command is issued by OE.
C. CREATE SYNONYM ord FOR oe.orders; This command is issued by the database administrator.
D. CREATE PUBLIC SYNONYM ord FOR oe.orders; This command is issued by the database administrator.
Answer: D
答案解析：
参考：/article/1628990.html
题意的问题，要创建一个同义词，使HR用户可以通过SELECT * FROM ord;来查询OE的orders表。
只能由数据库管理员创建公用的同义词，使HR用户来访问。
C创建的私有同义词，因为由DBA用户创建的，所以只能由DBA用户访问。