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单选题
A synonym for chloroform is（）.
A
trichloromethane
B
sulfuric chlorohydrin
C
chlorine gas
D
4-methyl phenol
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单选题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?（）A
CREATE SYNONYM ord FOR orders; This command is issued by OE B
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单选题Which statement is true regarding synonyms?（）A
Synonyms can be created only for a table B
Synonyms are used to reference only those tables that are owned by another user C
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The DROP SYNONYM statement removes the synonym, and the table on which the synonym has been created becomes invalid
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考题
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