Choose two
Which two statements are true about Oracle synonyms?
A) A synonym can have a synonym.
B) All private synonym names must be unique in the database.
C) Any user can create a PUBLIC synonym.
D) A synonym can be created on an object in a package.
E) A synonym has an object number.
(解析：
实验证明可以为同义词创建同义词;
同义词也是 Oracle 的一个对象;
synonym 需要授权才能够创建;
)